Renewable Revolution

Environment => Wonders of Nature => Topic started by: AGelbert on October 30, 2013, 08:45:29 pm

Title: Flight
Post by: AGelbert on October 30, 2013, 08:45:29 pm

Title: Re: Flight
Post by: AGelbert on October 30, 2013, 08:46:35 pm
Title: Re: Flight
Post by: AGelbert on October 30, 2013, 11:26:16 pm
Title: Re: Flight
Post by: AGelbert on October 30, 2013, 11:36:40 pm
For maneuverability and multidirectional flight (including flight backwards!  :o),
 the dragonfly is a master of apparently effortless flight.
Title: Re: Flight
Post by: AGelbert on October 30, 2013, 11:57:09 pm
The secret of the bumblebee that had scientist scratching their heads about how it could fly with such tiny wings is that if flaps them forward AND backward for double the lift.
The design of such a creature is an example of irreducible complexity. A bumblebee HAD to be able to flap its wings in both directions from the beginning of its species' existence or it would not have been able to fly. This is no small feat. WHY? Because the wing muscle velocity of movement for a double flap HAS to be able to use energy without overheating the bumblebee (like the hummingbird, a creature totally unrelated to a bumblebee). Hence, it has a very special metabolism unlike birds (it's far heavier in proportion to its wings than the hummingbird) and most,  if not all, other insects.

This creature is not the product of random chance. The amazing bumblebee, like ALL the living creatures we see in nature, was DESIGNED on God's drawing board.
Title: Re: Flight
Post by: AGelbert on October 31, 2013, 12:12:59 am
Feast your eyes on the complex wing machinery of the Lady Bug. Its twin shell wing protectors open forward to allow large FOLDED wings to unfold and double flap (like a bumblebee but much slower because of the greater wing size).

Try to imagining a "transitional life form" to Lady Bug.  ???

Would it function without all the flying machinery exactly as it has them now? Of course NOT!
Maybe you don't want to believe God created the Lady Bug but "evolution" sure did not!

This tiny bug is more complex and has more moving parts than a B747 but you want to cling to the FANTASY that this amazing little bug came about by random mutations? (

 ( I don't think so. ;D
Title: Re: Flight
Post by: Gelbert on November 04, 2013, 06:23:47 pm
More Eagle Flight Cam fun
Title: How Long Can Birds Stay in Flight?
Post by: AGelbert on November 07, 2013, 01:00:37 am
How Long Can Birds Stay in Flight?

Alpine Swift

Alpine swifts, birds that weigh less than 0.25 pounds (0.11 kg), are able to fly continuously for more than six months. :o These birds have been tracked with electronic tags and found to have been in the air for more than 200 days. It is thought that their diet of airborne insects and an ability to rest in mid-air are contributing factors to this ability. Movement tracking devices for animals were developed in the 1960s, but versions small enough to be attached to birds weren’t available until the early 2000s.

More about birds' flight:

•A female bar-tailed godwit was once recorded flying continuously for 7,145 miles (11,500 km) from Alaska to New Zealand, which is roughly equivalent to a person running 43.5 miles (70 km) per hour for a week.

•Ruby-throated hummingbirds have been found to be able to make a flight from the Yucatan Peninsula in southeastern Mexico to the southern US in less than one day.

•The tern is estimated to migrate about 1.5 million miles (2.4 million km) during its average lifespan of 30 years, which is equivalent to traveling to the moon and back three times.
Title: Bee Fuzz
Post by: AGelbert on November 14, 2013, 01:05:46 am



I always admired the fact that bees have fuzz.   (
 When they flap their wings, having that fuzz causes a static charge to build up so that when they land on a flower, the pollen jumps at the bee!  :o Those amazing little Earthlings have been using Renewable electricity to catch pollen grains for millions of years!  (

And now the big question for the atheists. What came first, the bees or the angiosperms?  (

If you say they were evolved "simultaneously', you lose the "it's all random chance and their is NO intelligent design" debate!  ( 

After all, bees are just a little different from angiosperms, wouldn't you say?    (

Bees are threatened from a variety of causes that Homo SAP has brought about. Scientists don't know all the causes but are convinced the immune systems of bees all over the world are becoming compromised.

Scientists further state that mankind, as well as a lot of flowering plants, will have a difficult time surviving if the bees perish.  (
Title: Semachrysa jade
Post by: AGelbert on November 14, 2013, 01:10:03 am
Semachrysa jade wing

Semachrysa jade

Semachrysa jade

Taxonomy — the exploration and classification of species — has been around as a scientific discipline since the 1700s. The discovery of new species is generally performed by taxonomists who go on fieldwork missions to seek out new species in various geographical regions and climates.

A physical specimen typically is collected and compared against existing species in a catalog. The discoveries also often happen by accident or via tips from individuals, particularly since the technology for high-definition photography has been available.

For example, in 2012, an insect named Semachrysa jade was discovered after a hiker posted a picture from Malaysia on the website Flickr and an entomologist suspected that it was a new species. It was the first known species discovered as a result of social media.

More about new species:

The International Institute for Species Exploration estimated that, as of 2012, only 2 million of a possible 12 million living species had been discovered. :o

About 50% of all newly discovered species are insects.

Before embarking on fieldwork missions, taxonomists often use the website Google Earth to scout locations that are the most likely to result in the discovery of new species. (

TWO MILLION SPECIES DOWN, ABOUT 10 MILLION TO GO... With the help of the internet, Google Earth and social media, we might just identify the other Earthlings in our biosphere before we manage to kill most of them, AND US  :(, off by burning fossil fuels...(   (

Title: The graceful Flight of Butterflies Can Be Seen Best in Slow Motion
Post by: AGelbert on November 28, 2013, 01:02:20 am

Why a butterfly flutters by

by David Catchpoole

Have you ever thought that the butterfly, with its jerky fluttering flight, is a ‘primitive’ and inefficient flyer? After all, its wings don’t look even remotely aerodynamic, compared to the beautifully streamlined ‘aerofoil’ wings of birds and airplanes.


Indeed, just 10 years ago, conventional laws of aerodynamics could not explain how any of the insects could fly at all,1 let alone maneuver so masterfully at low speeds—hovering and flying backwards and sideways, in complete control.

In the last decade, however, researchers have uncovered a variety of ‘unconventional’ ways that these gossamer aeronauts use their wings to stay aloft.2 For example, one particular flapping movement creates a spiraling airflow (vortex) along the edges of the wings, generating some of the lift which ‘conventional steady-state aerodynamics’ could not account for.3

The fluttering of butterflies is not a random, erratic wandering, but results from the mastery of a wide array of aerodynamic mechanisms.


LEVs (Leading edge vortices) are the main lift generating mechanism for insects and is totally different from the steady state aerodynamics design of aircraft

Now, after filming red admiral butterflies flying in a ‘wind tunnel’, researchers have been surprised by a whole range of complicated wing movements which generate more lift than simple flapping would do:

‘wake capture,

two different types of leading-edge vortex,

active and inactive upstrokes,

in addition to the use of rotational mechanisms and

the Weis-Fogh “clap-and-fling”? mechanism’.

What is more, the red admirals often used completely different mechanisms on successive wing strokes!

So, rather than being ‘primitive’, we now understand that butterflies flutter because they choose each wing stroke from a customized armory of twists, flaps, claps and flings. In the words of the researchers, ‘the fluttering of butterflies is not a random, erratic wandering, but results from the mastery of a wide array of aerodynamic mechanisms’.4 No wonder butterflies are so adept at taking off, maneuvering, maintaining steady flight and landing. (

Aeronautics engineers even desire to copy these mechanisms, e.g. for robotic spy ‘insects’,5 but there is still a long way to go before they can match the capabilities of insect flyers.6  (


For example, the software design in man-made aircraft requires many man-years of work and powerful computer chips for its implementation. In contrast, the flight control center in the brain of a fly has been estimated at about 3,000 neurons, which ‘gives the insect less computational power than a toaster, :o yet insects are more agile than aircraft equipped with superfast digital electronics.’7 So how do insects exercise flight control over such a wide range of aerobatic abilities?8 One commentator observed, ‘If engineers ever understand that, there will be a revolution in aeronautics.’7  (

There is one engineer who understands. He is the One who originally put these flying marvels together in the first place—the Lord, the Maker of the heavens and the earth, and the sea, and all that is in them.
Agelbert NOTE: If you watch closely in the video above, you can almost see the butterfly creating the double vortices at the trailing edge of his wings on the down stoke and then being sucked up by them as it goes into the up stroke. There's an energy saving secret here! The vortices actually allow the butterfly to use much less energy to lift its wings for the upstroke! Amazing! (

Related Articles
Astonishing acrobatics—dragonflies
Why a fly can fly like a fly
Beautiful black and blue butterflies
Aces of the Air
Butterfly brilliance
Dragonfly design tips
Watch a glasswing passing (without flying colours)
Lessons from locust wings

Further Reading
Pterosaurs flew like modern aeroplanes
Amazing discovery: Bird wing has ‘leading edge’ technology
Good design in miniature
Fancy flying from advanced aeronautics:
Expert engineer eschews “evolutionary design”

References and notes
1. Brookes, M., On a wing and a vortex, New Scientist 156(2103):24–27, 1997. Return to text.
2.Wieland, C., Why a fly can fly like a fly, Journal of Creation 12(3):260–261, 1998. Return to text.
3.Insects defying the laws of aerodynamics? Creation 20(2):31, 1998. Return to text.
4. Srygley, R.B. and Thomas, A.L.R., Unconventional lift-generating mechanisms in free-flying butterflies, Nature 420(6916):660–664, 2002. Return to text.
5. Butterflies point to micro machines, BBC News,, 13 January 2003. Return to text.
6.Sarfati, J., Can it bee? Creation 25(2):44–45, 2003. Return to text.
7. Zbikowski, R., Red admiral agility, Nature 420(6916):615–618, 2002. Return to text.
8. See also: Sarfati, J., Astonishing acrobatics dragonflies, Creation 25(4):56, 2003. Return to text.
Title: Nothing flies better than a Dragonfly!
Post by: AGelbert on December 28, 2013, 07:24:03 pm
Please note that the "primitive" insect above called a dragonfly (found in fossils allegedly over 500 million years old with the exact same morphology as a "modern" dragonfly) is considered PRIMITIVE because it has FOUR WINGS. However, science JUST LEARNED that it can outfly anything on the planet BECAUSE those four wings are independently articulated for in-phase or out-of-phase wing pattern flight (22%less power required!). This is a box canyon logical bag of worms conundrum for evolutionary true believers. Good!

Dragonfly design tips
by David Catchpoole

Just how can the dragonfly perform its energetically-demanding aerial acrobatics—flying backwards or forwards, fast, slow or hovering—and remain airborne for such extended periods?

The answer, in part, is that it has four wings.

While many flying insects use only a single pair of wings (and very well, too1), dragonflies have ‘unusual  ( musculature’ that allows them to move each of their four wings2 independently, which is a key factor in their ability to perform “astonishing acrobatics”.3

It had been thought that such out-of-phase flapping comes at a cost, i.e., reducing the amount of lift the insect can generate.   (

However, bioengineers have built a robotic version of a dragonfly, attaching sensors at the base of the robot’s wings to record lift and drag forces, allowing researchers to calculate aerodynamic efficiency.4,5 And it turns out that in out-of-phase flapping, the hind wings can extract extra energy from the wake of air sent by the front wings  , reducing aerodynamic power requirements by up to 22% compared with a single pair of wings.  ;D This mechanism, the researchers explained, “is directly analogous to that exploited by coaxial contra-rotating rotors, exemplified by helicopters such as the Kamov Ka-50.”4

What’s more, dragonflies have the flexibility to switch between out-of-phase flapping and in-phase flapping as appropriate. When taking off, for example, real dragonflies synchronise their wing beats, thus they are able to lift and accelerate better than if they used only two wings or four out-of-sync wings.

With this new insight into the aerodynamic efficiency of out-of-phase flapping, engineers hope to apply it in the next generation of flapping micro air vehicles.

As one bio-engineer explained, battery life limits how long micro air vehicles can stay aloft, so “any tips or tricks which enhance aerodynamic efficiency will be warmly welcomed.”5

It defies reason to suggest that an energy-efficient aerial acrobat such as the dragonfly was not intentionally, and intelligently, designed.  (

In fact, the researchers involved in this aerodynamic efficiency study apparently recognized the difficulty their finding presents to the widely-accepted evolutionary scenario, which posits that four-winged dragonflies arose long before (i.e., are “more primitive” than) the two-winged Diptera: (  (  (

“Caution ( be applied when interpreting the biological significance of the above observations. Suggesting an evolutionary advantage to either two-winged or four-winged forms is unwise, ( considering the success and diversity of the true flies (Diptera), and yet the maintenance of the four-winged form by dragonflies since the Carboniferous.”4,6    (

Surely it makes much more sense to say that four-winged dragonflies and two-winged flies were each designed to do what they DO do, and what they DO do, they do well!  ;D

You know, it takes a special kind of Homo SAP arrogance combined with stupidity and denial of reality to claim dragonflies have "UNUSUAL" wing control musculature when these very same intelli-MORON evolution believing "scientists" believe dragonflies have been around for 100s of millions of YEARS!

They would be more accurate to say dragonflies never evolved. 

But they will never say anything to disrupt their evolutionary merry myth making paradigm.  (

Listen Birdbrain, I'm the king of flight, not you!  ;D
Title: Re: Flight
Post by: AGelbert on May 04, 2014, 11:45:38 pm
Title: The Amazing Butterfly Funnel Effect
Post by: AGelbert on June 04, 2014, 10:45:09 pm


Amazing variety of design

One particular variant of butterfly stroke commonly called ‘funnel formation’ takes creative design to new heights. Here our focus is on what happens immediately after the wings pause at the end of the down stroke.

The wing tips just touch at the beginning of the upstroke: at this point this is a mirror image of the opening phase of the down stroke. As the upstroke progresses, however, two distinct flexural forces begin to simultaneously act on the wings—one along the chord10 of the wings from leading to trailing edge; the second acting at 90˚ to the first.

The two forces draw the wings into a funnel; the leading edges form the mouth, and the trailing edges compose the tapered body. As the funnel enlarges, air flows into the funnel mouth and the rear wing seal maintains the flow.

The funnel effect works until the wings separate: the instant that air leaks past the wing tips the effect is gone. The bonus for the butterfly is that by this point in the wing cycle the funnel has done its job; the wings are now moving fast enough for conventional aerodynamics to take over and generate sufficient lift.

Title: Which Bird has the Largest Wingspan?
Post by: AGelbert on August 14, 2014, 08:54:33 pm
Which Bird has the Largest Wingspan?

The albatross has the largest wingspan of any other bird species, at approximately 11.5 feet (3.5 m). This large wingspan allows the bird to glide for hundreds of miles without ever flapping its wings. By the time an average albatross reaches 50 years old, the bird has flown over 3.7 million miles (6 million km). While the albatross has the largest wingspan of any living bird species, the ancient Pelagornis sandersi is thought to have had the largest wingspan of any bird in history at 21 feet (6.4 m), according to fossils estimated to be over 25 million years old.

More about the albatross:

•Albatrosses are also strong swimmers and can dive to depths of over 16 feet (5 m) when hunting for food.

•When a female and male albatross mate, they produce just one egg, which they each take turns caring for.

•Albatrosses have historically been hunted for their feathers to be used for decorations for women’s hats, as well as used for down cushioning. There is also evidence the birds were consumed as food by ancient Eskimos.
Title: Re: Flight
Post by: AGelbert on December 22, 2014, 08:39:13 pm
Outside of the TOTALLY FALSE assumption by the above scientist that flight is an ability that insects "evolved", it 's a cool video. There is ZERO evidence of transitional flight characteristics in insects, period. There are MO insects with partial wings for millions of years in the fossil record. But still the RELIGION of the Darwin persists.  The amazing thing about the above scientist's cognitive failings id that he describes in DETAIL how incredibly specializes the fly sensors and wing anatomy and physiology are DESIGNED ONLY for flight, not walking, swimming or crawling. Such pretzel reasoning is breathtaking.
Title: The Tiniest Flying Life Form on Earth
Post by: AGelbert on December 22, 2014, 11:32:19 pm
Megaphragma is the TINIEST flying life form on Earth!
Megaphragma wasp is the size of a Paramecium!  :o

This life form is so unusual, it has cells that exclude cell bodies around the nucleus that Eukaryotic (true) cells "normally" have. Scientists think that is so because "there ain't no room for cells with all that stuff in a critter that small".  (

But they WON'T say the obvious! That is, that it seems to have been  DESIGNED that way from scratch; the size of a critter is a function of cell anatomy and physiology, not the other way around. ( 

Are they going to say that millions of years of squeezing in tight places EVOLVED the cell anatomy and physiology so it could EVOLVE a tinier wasp?  ( That is REALLY reaching! 

That is NOT the way "natural selection" is supposed to work anyway. Supposedly, the "BIG" flies got killed off and the ones with the  tiny cell machinery mutation survived.   ( don't think so.


It's a chicken or egg problem for the Darwinists. Did this type of cell precede the more common Eukaryotes or did a wasp "mutation(s)" -( it takes a LOT more than ONE mutation to RADICALLY modify cell anatomy and physiology this way!) produce this exquisitely adapted parasite to be almost invisible to the host?

There is simply ZERO reason to be that small. There's lots of room  out there and a plethora of larger prey that won't spot the wasp even if it is 10 times larger.     (

Even if Megaphragma is paraded as the only living example of what Eukaryotic cells were like before they EVOLVED into the ones most Eukaryotic life forms have today, then why is it still here?  ;D

If it was SO SUCCESSFUL for over millions and millions of years or so, how come the BASIC cell anatomy and physiology model was changed? HUH? This is proof of DESIGN, not evolution. (
What we have here is "Moore's God's law of miniaturization of flying equipment" cells. Neurons are super tiny too!

So, are you gonna tell me this wasp Evolved from a NON-flying microscopic whatever/wasp? Hello? Those cells REQUIRE specific design to create that tiny wasp. It will not be able to fly without the microminiaturization of cell function. It would be too heavy and probably 10 times as "large" (no longer microscopic).

It would need a more advanced design for a larger size like the exquisitely designed Drosophila melanogaster (fruit fly) sensory package (some of them not understood yet like eyes separate and apart from the "normal" eyes and a sensor they believe is also related to flight), and two types of wing muscles, ALL SPECIALIZED for FLIGHT, not crawling, walking or swimming.

They are USELESS except SPECIFICALLY for aerial foraging and evasive maneuvers to avoid getting eaten while FLYING. Yes the reflex time is also valuable when they are perched but the sensory package for a ground based insect is much, simpler. When insects cannot MOVE fast because they don't fly, they have other defenses like gas and stink and sprays which are radically different from the rapid response motion detecting sensor package on flying insects. The whole ENCHILADA is more proof of DESIGN:

In summary, there is, apparently, no way an insect as small as Megaphragma could fly without the biologically designed microminiaturization of its Eukaryotic cell anatomy and physiology. It's AMAZING! 

LOOK at how TINY the Megaphragma wasp is. It's just over 200 micrometers ( 200 μm)

If WE could microminiaturize OUR neurons, we could have orders of magnitude more processing ability.

I'm sure somebody in the MIC is "working" on it....

I still can't get past 100 gigaFLOPS. Need more Brain!   (

Title: Re: Flight
Post by: AGelbert on April 08, 2015, 10:12:06 pm
How Long Can Birds Fly without Stopping?  ???

Some migratory birds can fly non-stop for very long distances. Some birds are even able to cross oceans without stopping as they migrate. The record for the longest distance flown by birds without stopping belongs to bar-tailed godwits. These birds can fly 7,000 miles (11,265 km) without stopping to rest or eat.

Champion Migrator Bar-tailed Godwit

Every autumn, the bar-tailed godwits travel non-stop from Alaska to New Zealand. Previously, the record for non-stop bird flights was believed to be about 3,100 miles (5,000 km). The discovery about the distance flown non-stop by bar-tailed godwits broke this record and is an extraordinary example of endurance in birds.

More about migratory birds:

About 40% of all birds in the world migrate.

Migratory birds experience hyperphagia before migration; they eat far more than usual and store fat to last through their journey.

Penguins can't fly, but they do migrate, by swimming.


Perhaps the most astonishing of all bird migrations
is the one recorded in 2007, by the team led by biologist Robert Gill of the USGS Alaska Science Center in Anchorage. Gill used satellite tracking to follow the migration of shorebirds called bar-tailed godwits—and most notably a female godwit simply called "E7".

Bar-tailed godwits are powered migrants—which means that, like blackpoll warblers, they must flap their wings the whole way, without the luxury of soaring or gliding. Not only this, but unlike arctic terns or sooty shearwaters, powered migrants can never stop to feed or rest at sea.

On August 30, E7 took off from the coast of Alaska and without ever stopping to rest or refuel, she landed in New Zealand nine days later.

Bar-tailed godwits time their departure to coincide with favorable weather patterns, so E7 intentionally took advantage of tailwinds.  ( These helpful winds, combined with her own uninterrupted wing beats, allowed her to travel at an average of 35 miles per hour.

The total distance—7,270 miles flown entirely over the immensity of the open Pacific Ocean. With stored body fat as her only fuel, this shorebird weighing less than a pound made the longest recorded nonstop flight of any bird.

Title: Re: Flight
Post by: AGelbert on June 07, 2015, 12:08:19 am

One mystery of birds' flight is solved!  (

The elegance of birds' flight, their seemingly effortless aerial turns and the softness of their landing, have been envied by many people.

From countless observations, it has been known that the birds use a small group of feathers, called "the alula," a thumb-like structure that is present at the bend of the wing, in slow and steep flight such as landing. Why do they use it? How the tiny feathers can help them land softly?   ???
Title: Re: Flight
Post by: AGelbert on August 12, 2015, 10:00:02 pm
The amazing butterflies  (

The world of butterflies
Title: Re: Flight
Post by: AGelbert on August 30, 2015, 08:37:07 pm

Do Dragonflies Catch Insects on the Ground?   (

Dragonflies are efficient predators and can catch a variety of insect prey while on the wing. However, they are unable to hunt without flying, or even to walk at all, so a dragonfly with damaged wings is likely to starve to death.

Dragonflies start life as aquatic larvae, and will live in the water for up to two years before transforming into their adult form. Once they have wings, dragonflies become extraordinary flyers, capable of moving in all directions, of hovering and even of flying backwards. They can reach speeds of up to 35 miles per hour and will predict the movement of prey to intercept it, rather than just chase it down.

More about dragonflies:

•Dragonflies have the most complex eyes of any insect species, with over 30,000 facets, and can see more colors than humans, including ultraviolet light.

•Fossilized dragonflies have been found with wingspans of up to two feet across.

•Dragonflies are particularly good at keeping down mosquito populations.  ;D
A single dragonfly might eat hundreds of mosquitoes in a single day.
Title: Re: Flight
Post by: AGelbert on September 14, 2015, 10:54:31 pm

Robot designers want to copy the hummingbird
by David Catchpoole

Engineers at Japan’s Chiba University who aim to build miniature flying robots want to copy bird wing flexibility and movement in their designs.1

They chose the hummingbird2 as their ‘wing model’ because its capacity to hover quite still while feeding on nectar means they can be studied more easily than other birds. “And they’re quite small,” explained researcher Masateru Maeda, who used high-speed cameras to capture the way that the hummingbird precisely bends and flexes its wings, adding, “Larger birds that cannot hover have to be studied in wind tunnels.”1

The researchers found that the movement of the primary flight feathers changes the shape and size of the wings to precisely control the lift they generate.

Because hummingbirds can hover quite still while feeding on nectar, you don’t need a wind tunnel to study them.

This research project is but one of many around the world where engineers are seeking to incorporate evident design features in nature into their own designs. Not just in the expanding field of micro air vehicles (MAVs)3,4,5,6,7 but also in a host of terrestrial and aquatic enterprises. E.g. ceiling-walking lizards and insects are inspiring scientists to make detachable super-adhesives, for applications such as window-cleaning robots;8,9 desert creatures are providing the inspiration for improvements to machines that have to traverse sandy terrain;10 fish and even single-celled organisms are inspiring better submarines.11,12

And just as no-one should dispute that the resulting robots and other machines have been intelligently designed, nor should anyone dispute that design in nature wasn’t ‘by chance’ either  ( (Romans 1:20). For more, see

Title: Re: Flight
Post by: AGelbert on October 21, 2015, 01:31:38 am
Apus apus (Common Swift)

How Much of the Time Is a Common Swift in the Air?  ???

Young common swifts will stay airborne for two to three years  :o, landing only for brief moments to check out possible nesting sites. These birds are able to eat insects caught in mid-air and will drink, sleep and mate while flying.


Common swifts are the only bird that spends this much time on the wing without landing. Even nest building materials are gathered from airborne debris on windy days and are stuck together into a nest with saliva.


The common swift has feet that are ill-adapted to any kind of walking or perching, but can cling to vertical surfaces like cliff faces and the eaves of old houses where they commonly make their nests.

More about swifts:

The common swift lives in Europe and Asia during the summer breeding season and migrates to Central and Southern Africa for the rest of the year.

The common swift can reach diving speeds of up to 135 miles per hour.  :o 
We are called Swifts for a good reason. ;D

In order to stay safely out of reach of predators while sleeping, swifts can drift up to 10,000 feet high during the night. It's likely they sleep in a similar way to dolphins, by shutting down half of their brain at a time to rest.
Title: Re: Flight
Post by: AGelbert on November 21, 2015, 04:10:48 pm

Watch This Eagle Snatch a Drone in Mid-Air  ;D
Title: Re: Flight
Post by: AGelbert on February 10, 2016, 09:43:57 pm

Lady Bug Life Cycle
Title: Re: Flight
Post by: AGelbert on April 06, 2016, 10:27:15 pm

Watch a dragonfly grow its wings in this wonderful time-lapse video

Melissa Breyer (@MelissaBreyer)

Science / Animals

April 4, 2016

When we see a dragonfly flitting around the garden or pond, the insect world's equivalent of a fairy doing some summertime magic, seldom do we think of how it came to be.

As it turns out, these graceful skimmers spend between one and five years under water in the nymph stage, where they are ferocious predators with, as Wired magazine puts it, incredibly fast weaponized mouthparts. Yikes.  ;D

When they finally emerge to take form as the dragonfly we know and love, they do so with a set of lumps on their backs ... these will become wings. And not just any wings, but the most powerful wings in the insect kingdom.

Thankfully they have a glorious life above water, because it generally only lasts long enough to mature and reproduce, from a few weeks to up to six months.

Smithsonian produced this fascinating video showing not only life under water and those super grabby mouthparts, but also the growth of a dragonfly's wings in time-lapse.

So cool, see it here:
Title: Re: Flight
Post by: AGelbert on April 07, 2016, 06:58:38 pm
Why Butterflies Zig Zag "wildly"  ;)


Title: Re: Flight
Post by: AGelbert on July 05, 2016, 07:00:59 pm
Agelbert NOTE: Great frigate birds are fantastic gliders. Even their wings seemed designed for light weight for maximum lift because they do not have the oils all other sea birds secrete to make their wings waterproof so they can rest on the ocean surface. Great frigate birds must stay aloft, and even catch its prey in the air. They follow tuna and dolphin around because the flying fish and others jump out of the water to escape the threat below. That's when the Great frigate bird becomes the threat from above.

Biology Plants & Animals 

Great frigate birds found able to fly for months at a time

July 1, 2016 by Bob Yirka report

A juvenile frigatebird. Credit: Henri Weimerskirch CEBC CNRS

(—A small team of researchers with members from France, the U.K., Canada and Germany has discovered that the great frigate bird (Fregata minor) is able to stay aloft for up to two months at a time. In their paper published in the journal Science, the team describes how they affixed trackers to several of the birds as part of a two-year study, what they found, and even offer some ideas on how the birds manage to sleep. Raymond Huey and Curtis Deutsch, with the University of Washington in Washington State, offer a Perspective piece on the work done by the team in the same journal issue.

To learn more about the birds, the group managed to capture several specimens during their infrequent and short stays on land—they held on to them just long enough to affix extremely lightweight transmitters that were capable of monitoring GPS positioning, altitude, heart rate and acceleration in any direction. That allowed them to track the movements of a variety of birds and how much energy they were exerting.

In analyzing the data, the researchers discovered that the birds were able to stay in the air so long for two reasons; the first is that the expend very little energy because they rely on updrafts to keep them aloft. The second reason is because when they do eat, they simply swoop down out of the air to catch a fish that has jumped out of the water to avoid a predator from below. They have to be careful though, because they do not have waterproof wings.

In charting their flight patterns, the team found that the birds travel incredible distances—sometimes covering up to 250 miles in a single day. They also found that the birds were able to take advantage of another type of updraft when need be, they would slip under a cumulus cloud and allow themselves to be very quickly pulled upward (up to 5 meters per second), without having to flap their wings a single time. Such sudden elevations could take them as high as 4,000 meters, where the air is extremely thin, and the temperature freezing. From there, they would glide down for hours, until reaching another updraft. 

(EXCELLENT VIDEO at article link) Credit: Aurelien Prudor / Henri Weimerskirch CEBC CNRS

The birds live in the air over the Pacific and Indian Oceans, which means they are subject to the doldrums, but they have, the team found, discovered a means for handling them as well —they simply hang around on the edges taking advantage of the updrafts in the small clouds that develop around the edges.  ;D

The birds are able to glide so well, the team notes, because they have the least amount of body weight distributed over the total area of their wings of any bird.  :o   ( They also suggested the birds might actually sleep for just minutes at a time as they are carried effortlessly up into clouds.
Explore further: Study shows alpine swift can stay aloft for 200 days

More information: H. Weimerskirch et al. Frigate birds track atmospheric conditions over months-long transoceanic flights, Science (2016). DOI: 10.1126/science.aaf4374


Understanding how animals respond to atmospheric conditions across space is critical for understanding the evolution of flight strategies and long-distance migrations. We studied the three-dimensional movements and energetics of great frigate birds (Fregata minor) and showed that they can stay aloft for months during transoceanic flights. To do this, birds track the edge of the doldrums to take advantage of favorable winds and strong convection. Locally, they use a roller-coaster flight, relying on thermals and wind to soar within a 50- to 600-meter altitude band under cumulus clouds and then glide over kilometers at low energy costs. To deal with the local scarcity of clouds and gain longer gliding distances, birds regularly soar inside cumulus clouds to use their strong updraft, and they can reach altitudes of 4000 meters, where freezing conditions occur.

Journal reference: Science search and more info website (
Title: Re: Flight
Post by: AGelbert on October 13, 2016, 09:37:38 pm
OWLS   (
Title: Re: Flight
Post by: AGelbert on November 23, 2016, 06:31:31 pm

Why Don't Birds Ever Collide? ( (

You’d think that with all the flocks of birds navigating the sky, there would be the occasional head-on collision. But birds are highly skilled aviators with fast reflexes -- and a good understanding of what to do when two are on the same flight path. A recent study at Australia’s University of Queensland found that birds appear to know to veer right if another is headed straight at them.

The researchers tested seven male budgerigars (also known as “budgies” or parakeets) in a 70-foot (21.3 m) tunnel over a four-day period, and recorded zero mishaps. About 85 percent of the time, the birds veered right, and often adjusted their altitude to avoid mid-air crashes. (

The aerial rules of engagement:

•In the study, the birds rarely flew at the same height, suggesting that individual birds may have specific altitude preferences.

•Interestingly, aircraft pilots are taught to veer to the right when they perceive an imminent head-on collision with another aircraft, said Mandyam V. Srinivasan, head of the research group.

•Birds are more prone to collisions with man-made obstacles. Sometimes, birds fail to see wires, especially near dawn or at night. Reflections from glass windows can also fool them, sometimes with deadly results.


Title: Re: Flight
Post by: AGelbert on December 17, 2016, 06:51:40 pm

Which Bird Can Glide the Farthest? (

The wandering albatross is known for its ability to fly at great speeds and go long distances with very little effort. This seabird is capable of traveling 10,000 miles (16,093 km) in a single journey and circumnavigating the globe in as little as 46 days. Scientists have long wondered how this fantastic flyer can travel up to 600 miles (966 km) a day without flapping its wings.


The secret is its mastery of “dynamic soaring,” which involves gaining height by angling its enormous wings while flying into the wind, then turning and swooping at speeds as high as 67 mph (108 km/hr).


A fast flyer on endangered list:

•The albatross’ lifespan is roughly 60 years and its wingspan is the widest of any bird -- up to 3.5 meters (11.5 feet).


•While the albatross has existed for about 50 million years, all 22 species are now endangered. :(  The birds frequently get caught in baited fishing lines, resulting in 100,000 deaths a year.

•The idiom “having an albatross around your neck" is attributed to the poem “The Rime of the Ancient Mariner” by Samuel Taylor Coleridge. In the poem, a sailor brings bad luck to his ship and crew after shooting an albatross. When the ship loses wind near the equator and runs out of water, he’s forced to wear the dead bird around his neck as punishment.
Title: Re: Flight
Post by: AGelbert on February 17, 2017, 01:42:32 pm
From egg to flight: Hummingbirds  (

I am watching two hummingbird chicks almost ready to fly. You can watch them live at the link below.

IMPORTANT:   Do NOT feed hummingbirds sugar water or "nectar" for more than 24 hours.   It will harm the bird. Babies fed sugar water or "nectar" may develop deformities or die. 

What to Do If You Find a Hummingbird
Title: Re: Flight
Post by: AGelbert on July 11, 2017, 02:53:33 pm
When Does an Aging Bird Stop Laying Eggs?   ( (  (

Laysan albatross in graceful flight

A Laysan albatross typically lives for around 40 years, spending most of its life in the air, flying thousands of miles every year in search of food. Once an albatross reaches adulthood, it’s difficult to determine the bird's age, but ornithologist Chandler Robbins banded one particular Laysan albatross back in 1956, so biologists know that the bird is still going strong. In fact, at around 66 years of age, the bird that Robbins named Wisdom just hatched another chick at her breeding home on Midway Atoll in the Hawaiian archipelago. Wisdom, the world's oldest-known wild breeding bird, is providing scientists with valuable information about reproduction in older animals.

Not ready for retirement: (    (

The Laysan albatross lays no more than one egg per year, and sometimes none. Wisdom and her mate return to the same spot every year to rekindle their relationship.

Laysan Alabatross Couple

An Albatross named Wisdom (

Albatrosses mate for life, but Wisdom has outlived several males  :o  :D. She is believed to have raised 30 to 36 chicks over her lifetime.  (

We Albatross ladies may just have one at a time, but we can do that for MANY years!  ;D

Renowned Ornithologist Chandler Robbins    (  (

Chandler Robbins passed away in March 2017 at the age of 98; the renowned ornithologist was still volunteering with the Bird Banding Laboratory in Laurel, Maryland, during the last years of his life.  (
Title: Re: Flight
Post by: AGelbert on July 29, 2017, 05:22:52 pm
Splish, Splash: Why Do Birds Take Baths?


MARCH 9, 2015

A cardinal at a bird bath. Photo: Flickr user ehpien under a Creative Commons license.

What does science tell us about the importance of a good bath to a bird?

The answer: surprisingly little!

A study published in 2009 stated it plainly: “Birds of most species regularly bathe in water, but the function of this behavior is unknown” 1.

This post is about the cool green science of bird baths: what we know and intriguing areas of inquiry for future research.

Rub-a-Dub-Dub, Many Birds in the Tub (

Despite the lack of knowledge about the function and importance of baths to birds, we all know that birds (like the rest of us) love having water around for bathing and drinking.

When working with migrant birds in the Yucatan Peninsula, I first began to understand how seriously birds take the business of bathing. We were studying warblers that were typically territorial. These birds frequently engaged in threat postures and even in fights to enforce the boundaries between their exclusive home ranges at our mangrove study sites.

Birds love hanging around water. Photo: Flickr user Prayitno under a Creative Commons license.

But at a communal bird bath, there was a nightly truce.  ;D

Each evening at dusk, in a special spot in the mangroves where a freshwater spring bubbled up from the ground, numerous American redstarts, northern parulas, magnolia warblers, common yellowthroats and yellow warblers took turns bathing.

One by one, they shared this little oasis before going to roost for the night.

Seeing territorial warblers calmly taking turns for a bath tells us that for a bird, having access to water for bathing is worth checking one’s combative tendencies – at least for a few minutes.    (

Why Birds Take Baths

So, what’s so important about a bath? ???

Starlings that take baths may be better able to elude predators. Photo: Flickr user NatJLN under a Creative Commons license.

The number of relevant scientific articles can be counted on one hand. There are very basic descriptions of the mechanics of bird bathing in North American2 and Australian birds3, an experimental examination of wetting and drying of disembodied feathers4, and a recent pair of studies that experimentally deprived captive starlings of bath water 5,1.

Although the functions of bird bathing aren’t clearly known at this point, these studies suggest that bathing plays an important role in feather maintenance. (

Feathers are a bird’s lifeline: they insulate, waterproof and, of course, provide the power of flight.

Feathers get replaced once or twice a year. In the interim, they need to be kept in good condition. The sun, feather-munching mites, bacteria and gradual wear take a toll on feathers. A set of year-old flight feathers look like they’ve been through the ringer: they are frayed and dull.

Photo: © Larry Niles A good bath may keep those precious feathers in the best condition possible for as long as possible.

Two recent studies on captive starlings have progressed our understanding a bit further. In one paper, Brilot and colleagues hypothesized that depriving a bird of a bath would result in more disheveled feathers and translate into poorer flight performance.

They tested a group of freshly-bathed starlings and a group that had been deprived of a bath for three hours prior to the experiment. The starlings deprived of a bath were clumsier when flying through an obstacle course made of vertically-hung strings, bumping into more strings as they flew.

In their second paper on starlings, the research team examined whether the bath-deprived starlings knew they were clumsier. They did this by presenting bathed and unbathed groups of birds with recordings of starling predator alarm calls – and delicious meal worms – at the same time.

The experiment indicated that birds with access to bath water were more willing to let their guard down and feed, despite the recorded call signaling the presence of a predator. The authors suggest that the unbathed birds were more cautious because they were aware that their ability to escape was impaired. (

This work tells us that, beyond preserving feathers over the long term, bathing even makes a bird a more agile flier and more adept at escaping predators in the short term.

These studies are helpful, but the function of bathing still eludes us.

How does it make these birds better fliers? Does it help realign the tiny barbs that hold feathers together? Does it help distribute protective oils? Does it improve feather performance in some other way?

This all leaves me wondering about those birds in the Yucatan. Our research was focused on revealing differences in habitat quality among individuals, mainly by measuring the food resources of the birds. We reasoned that more food equaled birds in better condition with a better chance of survival.

But maybe we were ignoring another important aspect of habitat quality – access to bathing water. We see from the starling work that being deprived of a bath could make an unbathed bird easier to catch, so baths might play a role in survival too.

Until we get an answer from science, we will need to rely on common sense and keep those backyard bird baths full. (

Preparing Your Backyard Bird Bath

Many of us with bird feeders also have a bird bath to go along with it. Even in the coldest months of the year, I’ve found that birds are eager to take baths.   ( :o

I recently poured a warm tea kettle of water into my frozen bird bath and there was an instant scrum as the cardinals and white-throated sparrows jockeyed for position around the bath.

A heater keeps the backyard bird bath operational all winter. Photo: Flickr user techno_nanna under a Creative Commons license.

A more sophisticated approach to maintaining a bird bath in winter is to use a bird bath heater.

Misters keep water fresh and brings a lot more attention to the bird bath. They are a great bird attractor during the spring and summer when people typically aren’t feeding birds.

Although it would be nice to know the exact functions of bird bathing, a lack of scientific knowledge won’t ever get in the way of a good bath. (


Brilot, B. O., Asher, L. & Bateson, M. 2009 Water bathing alters the speed–accuracy trade-off of escape flights in European starlings. Anim. Behav. 78, 801–807.
Slessers, M. 1970 Bathing Behavior of Land Birds. The Auk 87, 91–99.
Verbeek, N. A. M. 1991 Comparative bathing behavior in some Australian birds. J. Field Ornithol. 62, 386–389.
Van Rhijn, J. G. 1977 Processes in feathers caused by bathing in water. Ardea 65, 126–147.
Brilot, B. O. & Bateson, M. 2012 Water bathing alters threat perception in starlings. Biol. Lett. 11.
TAGS: Birds, Research

Joe Smith, PhD, explores the lives of the birds around us by sharing insights from scientific research. As an ecologist for a New Jersey-based conservation services company, he helps to restore coastal ecosystems and the migratory birds that depend on them. Joe lives in the birding hotspot of Cape May, NJ and has done field research with birds throughout the U.S. and Latin America. He writes about nature in his backyard at

Agelbert NOTE: If you share your household with a kitty, please make sure the kitty does not have easy access to the bird bath as the following clever kitty has:  ;)

Birds, what birds? I'm just here enjoying the view.  (  (

Title: Re: Flight
Post by: AGelbert on August 28, 2017, 02:12:55 pm
Title: Re: Flight
Post by: AGelbert on December 07, 2017, 10:30:05 pm
( (

Harpa Cristã instrumental em Flauta Andina
Title: Re: Flight
Post by: AGelbert on January 14, 2018, 09:20:36 pm
Sky Hunters, The World of the Dragonfly

The Secrets of Nature


The Secrets of Nature

Published on Dec 2, 2014

They hover over ponds and pools and inhabit the banks of rivers and streams. With their dazzling metallic colours and unique ways of flying they are truly jewels of the air.

This film presents dragonflies as they have never been seen before. Fascinating close up shots take us into the world of these insects, which have lived on earth since the age of the dinosaurs.

Spectacular super slow motion shots and elaborate computer animation uncover, for the first time, how dragonflies capture their prey at lightning speed while flying and how they mate in the air.

Underwater photography reveals the development of the predatory dragonfly larvae while time lapse sequences show the emergence of the fully grown insect.

However these amazingly colourful flying acrobats are in danger. The dragonfly's preferred habitat in and around water is rapidly diminishing, which, in Europe alone, has pushed around 80 species to the brink of extinction.    (
Title: Re: Flight
Post by: AGelbert on March 08, 2018, 01:35:24 pm
An Eagle nesting in Catalina Island
Agelbert NOTE: At the time of this posting you can watch and hear an interesting territorial display by a Bald Eagle 🦅 with two eggs in her nest. Towards the middle of the video, you can see the eagle move around and make noises and open her wings as a bird makes passes nearby. Watch to learn how an eagle sounds 🔊 when it is issuing a warning to not come any closer. (


Title: Re: Flight
Post by: AGelbert on October 19, 2018, 02:45:25 pm

New study reveals why dandelions are among the best fliers — they take to the air in a unique way (



Dandelions use a bundle of bristly filaments, called a pappus, to help keep their seeds aloft for dispersal. After the pappus takes to the air, it also prolongs the descent of the seed, enabling it to be carried much farther away. This is not uncommon in the plant world, as many other species employ a similar strategy — but they have a wing-like membrane instead of the spiky pappus.


So Naomi Nakayama, Ignazio Maria Viola, and colleagues set out to study exactly what happens to the dandelion flight. They constructed a vertical wind tunnel to visualize the flow around freely flying and fixed dandelion seeds, employing long-exposure photography and high-speed imaging to monitor any effects. They illuminated the seeds with a laser to make the entire system easier to visualize.

Researchers found that air does indeed flow through the bristles of the pappus, but the amount of air is very closely controlled by the spacing between the bristles, and this is very important. This particular structure formes a stable, doughnut-shaped air bubble, floating around each pappus. They call this air bubble a vortex ring.

Full article: (

Agelbert NOTE: Check out the video below to get a clearer understanding of what they disovered. 👀 🧐
Title: Re: Flight
Post by: AGelbert on April 16, 2019, 09:37:15 pm
  (  (

Opensource Ornithopter Prototype. Arduino Powered and Remote Controlled

Hi folks! 😀

This instruction is a story about how I made an ornithopter prototype.

For those who do not know, an ornithopter is a machine designed to achieve flight by flapping wings like a real bird. The idea was to create an ornithopter from scratch, to control it remotely, and of course to make it fly.

Please do not judge; I'm not the professional of the aircraft industry. So, not everything works as I would like, but it still does. (

Instead of photos, this instruction prevails by graphic schemes. The real result can be seen in a multi-series video on the Youtube channel. If you enjoy this guide, subscribe to the channel. The first series is already online.

The instruction will be corrected and supplemented with material over time. The ornithopter will also be improved.

At this moment the instructable can be divided into the following chapters: ( 🧐

Title: Re: Flight
Post by: AGelbert on April 23, 2019, 07:40:39 pm
Opensource Ornithopter Prototype. Arduino Powered and Remote Controlled.

By gabbapeople in Arduino

Learn more:    (
Title: Re: Flight
Post by: AGelbert on April 28, 2019, 02:15:52 pm
The Giant Bird That Got Lost in Time

PBS Eons
Published on Mar 12, 2019

The California condor is the biggest flying bird in North America, a title that it has held since the Late Pleistocene Epoch. It's just one example of an organism that we share the planet with today that seems lost in time, out of place in our world.

Thanks as always to Studio 252mya for their wonderful paleoart. You can check out more of their work here:

Produced in collaboration with PBS Digital Studios:

Super special thanks to the following Patreon patrons for helping make Eons possible:

Katie Fichtner, Anthony Callaghan, XULIN GE, Po Foon Kwong, Larry Wilson, Merri Snaidman, Renzo Caimi, Ordenes, John Vanek, Neil H. Gray, Marilyn Wolmart, Esmeralda Rupp-Spangle, Gregory Donovan, Ehit Dinesh Agarwal, الخليفي سلطان, Gabriel Cortez, Marcus Lejon, Robert Arévalo, Robert Hill, Kelby Reid, Todd Dittman, Betsy Radley, PS, Philip Slingerland, Jose Garcia, Eric Vonk, Tony Wamsley, Henrik Peteri, Jonathan Wright, Jon Monteiro, James Bording, Brad Nicholls, Miles Chaston, Michael McClellan, Jeff Graham, Maria Humphrey, Nathan Paskett, Connor Jensen, Daisuke Goto, Hubert Rady, Gregory Kintz, Tyson Cleary, Chandler Bass, Maly Lor, Joao Ascensao, Tsee Lee, Sarah Fritts, Ron Harvey Jr, Jacob Gerke, Alex Yan

If you'd like to support the channel, head over to and pledge for some cool rewards!
Title: Re: Flight
Post by: AGelbert on June 25, 2019, 06:31:09 pm
The ideal shape for a multirotor ‘ducted-fan’ that can dramatically improve thrust and flight time.

Posted on January 14, 2015 by Richard

2018 update: User Wob Barley has built a working model of this duct based on David’s model (see update below) and done some tests which suggest an impressive 40% efficiency/40% thrust increases over open propellers. Here is a video of the test flight.

Learn more:  (
Title: Re: Flight
Post by: AGelbert on June 25, 2019, 07:30:59 pm
Custer channel wing

Tom Stanton

Published on Oct 5, 2018
Ever wondered if a wing can produce lift at zero ground speed?

Here is some more information about the Custer channel wing:

Full scale test flights -

Channel wing as potential VTOL/STOL (Download link) -
Air & Space Article -
Robert Novell's Blog -

3D printer sponsored by AnyCubic:

3D Printer filament sponsored by 3D Printz UK:

Enjoy my videos? These are made possible due to help from my Patrons. If you wish for me to continue making videos, please consider supporting my efforts:

My Other Equipment:
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Main lens -
Main tripod -
Secondary Tripod -
Microphone -
Audio recorder -

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Category Science & Technology