We have the impression that most birds fly forward, but why do hummingbirds fly upside down?

Be aware that the only bird that can fly any backwards is the hummingbird.

The design of the hummingbird's wings is different from most other types of birds. The hummingbird has a unique ball-and-socket joint on its shoulders that allows the bird to rotate its wings 180 degrees in all directions. The shape of their wings is long, narrow, and tapered, which allows them to move through the air faster and easier.

In addition, the shoulder joints of the wing.

And the elbow joints are very close to their tiny bodies, allowing the bird's wings to tilt and rotate. These traits allow hummingbirds to change the direction of flight in a way that other birds can't.

The hummingbird is small in size and its skeleton is not easy to preserve as fossils, so its evolutionary history remains unsolved. Most of today's hummingbirds live in Central and South America.

Hummingbird fossils have been found in South America from 1 million years ago, so zoologists believe that hummingbirds originated from the PleistoceneHowever, in Europe, zoologists have discovered fossils of European hummingbirds, the earliest known hummingbird fossils, more than 30 million years old, so it is known that the ancestors of hummingbirds appeared as far back as the Oligocene.

Hummingbirds inhabit a wide range of areas from the Andes up to 4,000 meters high.

up to the Amazon River in the equatorial region.

Tropical rainforests, some hummingbirds live in arid bush jungles, and some hummingbirds live in humid swampy areas.

Hummingbirds are found only in the Americas, from southern Canada and Alaska.

They can be found on Tierra del Fuego, including the West Indies. The black-chipped northern hummingbird is the most common species in the United States and western Canada. Only the red-throated northern hummingbird is found in North America.

It breeds in the east, but individual members of other species of hummingbirds can also be seen in eastern North America, sometimes from Cuba.

or nomads in the Bahamas.

Hummingbirds are not found in all of Europe, Asia and Africa, but some moths (such as long-beaked moths) can be mistaken for hummingbirds when they feed on nectar during the day. Sunbird species also eat nectar, but are found in East and Southeast Asia.

The similarity in appearance is based on convergent evolution rather than taxonomic correlation.

The birds we see every day can only fly forward when they flap their wings to fly. I don't think I've ever seen a bird that can fly upside down. However, hummingbirds, which live in South America, have this unique ability to fly.

There seems to be no one left of the animals that fly upside down, except for nasty insects such as mosquitoes and flies.

So, what is it about hummingbirds that they have the ability to fly upside down? Is this ability necessary for their lives?

As the smallest bird in the world, the hummingbird is only a few centimeters long and weighs no more than 5 grams. The sparrow, which seems to us to be very small, is a veritable behemoth for hummingbirds. Therefore, the difference between hummingbirds and the generally larger mosquitoes is not large.

So such a small volume and such a light weight have a very small impact on the flight.

So hummingbirds can fly to thousands of meters in the air, and its flight speed can reach about 50 kilometers per hour. This feature also makes hummingbirds more difficult for humans to detect, and indirectly improves the safety of hummingbirds when flying.

In order to maintain a high wing swing speed, the hummingbird has very developed shoulder muscles. The wings of the hummingbird do not have a long wingspan and are large in area like the average bird, and its wings are relatively short and narrow. Therefore, it must wave its wings quickly to maintain its more agile flight state.

This is not possible without well-developed shoulder muscles. Therefore, the hummingbird can maintain a swing speed of 50-70 times per second, which is also an important basis for it to maintain its flight status in any direction. Not only can you fly forward, you can fly backwards, and even hover like *** without any problems.

Because of its small size, hummingbirds have a relatively simple diet and basically feed on nectar. However, hummingbirds weigh relatively heavily on petals, and it is difficult for them to stay on the petals to feed if they cannot suck nectar while flying. And because some flowers bloom more densely, if you can't maintain a random hovering or backward movement, then it is difficult for hummingbirds to calmly intersperse between such dense petals.

So in order to fill their bellies, hummingbirds have evolved this unique skill. Although there is no way to compare with flies and mosquitoes in terms of speed, such as flies and mosquitoes, this survival skill of hummingbirds is obviously sufficient from the perspective of avoiding natural predators and facilitating foraging.

Conclusion: The hummingbird was able to use such a weak body and not be eliminated in the evolution of nature, not only because it is not picky about food, but also because its flight mode is very special. At present, none of the human aircraft can achieve this flight state of hummingbirds.

If this flight characteristic of hummingbirds can be learned by humans and applied to aerospace, it will obviously cause a round of technological development in the field of human aviation!

This is because this creature is inherently unique, and the body structure of this creature is also very special, so they can fly upside down.

This is because hummingbirds have a very strong sense of direction, a very strong ability to discriminate, and a very fast flight speed, so they can fly upside down.

Because their body structure is different, this body structure can make them fly a little more flexibly.

Because hummingbirds are used to feeding on flower buds.

The nectar and small insects in the center of the flowers, if the hummingbird rests on these flowers, these flowers are generally too small and delicate to bear the weight of the hummingbird. Therefore, the hummingbird has to have its peculiar wings, and when they vibrate rapidly, you can only see a gray mist in front of you. It's hard to photograph how fast it flies, but how fast does a hummingbird fly?

It is 42 kilometers per hour under normal conditions and about 80 kilometers per hour during courtship, which is about the same speed as a car on the highway.

Of all the birds, the fastest loon is the peregrine falcon.

It can dive at a maximum speed of 360 kilometers per hour, but strictly speaking, it is not the fastest bird, because the bird's flight ability is mainly reflected in normal flight, and the fastest bird under normal conditions is the sharp-tailed swift.

Its normal speed reaches 170 kilometers per hour.

Hummingbirds live in South America.

and North America, some are only as big as a person's thumb. Among birds, it is a very strange and interesting bird. The hummingbird, like the industrious bee, collects nectar for a living, hence its name hummingbird. Hummingbirds are very durable and can fly over the Gulf of Mexico.

Hummingbirds have an ability that other birds don't have. It can stay almost completely in the air. With short, powerful wings that flapped between 15 and 70 times per second, the hummingbird has an amazing ability to fly, being able to fly upside down, remain stationary in the air, and take off and land vertically like ***.

The frequency of the wings of hummingbirds is much faster than that of ordinary birds, and it can fly upside down due to the different physiological structure of the hummingbird.

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This is because hummingbirds can explore the direction very well when they fly upside down, because hummingbirds explore according to a tentacle on the back of their heads, so there is no problem flying upside down.

Because the wings of hummingbirds vibrate quickly, they can support them to fly standing and backwards, and the two-part bird is small in size and has little resistance to the wind.

Because the wings of hummingbirds vibrate very fast, and they can also hang in the air, they can naturally fly upside down, which is also an advantage.

Because the hummingbird's wings vibrate quickly, it may support standing and backwards, and the two-part bird is small in size and has little resistance to the wind.

Legend has it that hummingbirds originally flew only because of what, and later because of what.

Hello, glad to answer for you once, there was a fire in the forest, and the other birds fled quickly to a safe place, while the hummingbirds flew towards the place where the fire was serious. During the flight, thousands of hummingbirds were burned alive by the fire, and the last surviving hummingbirds flew to another place. Since then, they have changed their rules, and instead of flying blindly (mánɡ) as before, they have gradually learned to fly backwards.

Hummingbirds are the best performers of flying acrobatics.

The hummingbird that lives in South America is the smallest bird, while the tasseled hummingbird and the little kingfisher hummingbird are among the two smallest hummingbirds in the world. They are no more than 7 centimeters long and weigh less than 2 grams.

Hummingbirds are still flying while sucking on nectar, and this can only be done with great flying skills. The hummingbird's body always remains vertical, so its wings vibrate back and forth instead of up and down. The constant air flow generated by this vibration holds up the hummingbird's body.

It is capable of flapping its wings eighty times a second. It only takes a slight movement of its tail to move it back and forth. It may seem simple, but it requires very delicate coordination and balance.

Since the hummingbird's shoulder joints are very flexible, its wings are able to rotate to the maximum, allowing it to fly backwards. Hummingbirds are the only birds that are capable of flying backwards.

The hummingbird's nest is only the size of a bowl bean, and because the nest is so small, the hummingbird can only feed the chicks during flight. This delicate work requires the hummingbird to maintain absolute balance in a confined space. Because once the flight is unsteady, it will hurt the chicks.

They are superior to their special musculature and wing structure: the relative size of the pectoral muscles of hummingbirds is the crown of birds, and they have a strong ability to vibrate their wings;In addition, ordinary birds can only move the muscles at the proximal end of their wings but cannot manipulate their distal parts, but in hummingbirds, they can use both.

Therefore, hummingbirds are stronger than other birds. And this seems to be a simple flight, and the body structure and coordination required are relatively complex, and other birds do not have these abilities.

Because it is so small, it takes constant flapping of its wings to keep flying from being blown away by the wind, resulting in a strong heart and body structure. If other birds exercise like hummingbirds, they can also fly backwards.

Hummingbirds have short but powerful wings that flap at speeds ranging from 15 to 70 times per second, so they can rise and fall vertically like *** or fly backwards.

Because of the unique body structure of the hummingbird, its wings can rotate to the maximum and its shoulder joints are very flexible, allowing it to fly backwards unlike other birds.

The Hummingbird family, led by the Hummingbird King, became the most powerful family in the forest. Because they are so small, each hummingbird has to rely on their family to survive. The hummingbird family has a rule, that is, they can only move forward and not retreat, and whoever retreats will peck to death. With such rules, their families even outperformed the families of orangutans, bears, and tigers.

In their eyes, as long as they are under the command of the hummingbird king, the hummingbird family is omnipotent.

One day, a fire broke out in the forest. The fire raged in the forest, and the other families fled to escape the fire. The Hummingbird King believed that his kingdom of hummingbirds would be able to extinguish the fire, so the king ordered all the hummingbirds to put out the fire.

Flocks of hummingbirds threw themselves at the fire, but the fire grew bigger and bigger, and countless hummingbirds turned to ashes.

In the midst of the hummingbird flock, a hummingbird suddenly began to retreat, its wings vibrating and flying backwards. When flying backwards, some hummingbirds also flew backwards with this hummingbird, one, two, three, more and more ......

A few days later, a heavy rain finally extinguished the fire. The whole hummingbird family was left with those hummingbirds that could fly upside down, and later, the hummingbird family slowly became stronger again, but the hummingbird family had a new ability than other bird families, that is, they could fly upside down.

3/10x2/3

1 5 (km).

A: Able to fly 1 5 km.