The ostrich s wings can insulate the heat and make it better adapted to life, right?

*Yes**, ostriches have wings that are insulated, which allows them to adapt better to life. During the incubation and brooding period, ostriches need wings to protect their eggs or chicks from blazing sun exposure. At the same time, the ostrich's wings can also be used to increase its momentum to frighten invading enemies.

This adaptability allows ostriches to survive in arid environments.

Characteristics of ostrich wings: although they are large, they cannot fly, mainly because the sternum is flattened, there is no keel protrusion, the clavicle is degenerate, and the feathers are evenly distributed, there is no distinction between feather area and bare area, the feathers are fluffy but underdeveloped, lack of differentiation, and there is no small hook on the feather branches, so it does not form feathers. The function of ostrich wings is to spread their wings, act as a "sail" to help run by the wind, and can also block the sun, protect the young, and flapp their wings to demonstrate against the enemy.

Ostriches are oviparous animals, and among all birds, ostrich eggs are the largest, so in the eyes of many wild animals, ostrich eggs are a big meal. Ostriches are one of the few conscientious parents in nature, and an ostrich egg hatches for about 40 days, during which the ostrich will take turns to stay in front of the ostrich egg.

If danger comes at this time, it is absolutely impossible for the ostrich to abandon their children and flee for their lives, the only thing they can do is to bow their heads, spread their wings and hide all the ostrich eggs under the wings, and then stick themselves flat on the desert, using their protective colors to confuse the enemy.

large body size; Adapted to life in the desert wilderness.

Ostriches can live in extreme cold or heat, mainly due to their physiological and behavioral adaptability.

First of all, in extremely cold or hot environments, ostriches can regulate their body temperature and protect themselves by changing the state of their body feathers. In cold environments, ostriches can inflate their feathers to form an insulation, while also retracting their necks and heads into their feathers, reducing heat loss. In a hot environment, ostriches can halve their feathers to form a ventilation layer and lower their body temperature to cope with the high temperatures.

Secondly, ostriches can also adapt to droughts and water scarcity environments. They can repeatedly absorb and excrete water from the urine to maintain water balance. In addition, they can be replenished with enough water during the season when water is abundant, stored in the body, and used in times of drought.

Finally, the behavioral habits of ostriches also help them adapt to extreme environments. For example, during the day, ostriches will hide in the shade and in the grass, avoiding high temperatures and strong sunlight; At night, ostriches can sleep on the cold desert dunes to avoid the effects of cold air on the ground.

In summary, the physiological and behavioral characteristics of the ostrich allow it to adapt to a variety of extremely virtual environments and survive.

Not because its wings don't work, it's because its ability to fly has degraded and it can't fly anymore. The ostrich is one of the largest birds in the world, the height of an adult ostrich can reach meters, and the weight of a male ostrich can reach 300 catties. The ancestors of ostriches could fly, but later the ostrich's living environment became more and more comfortable, so the ability to fly deteriorated.

1. Ostrich Ostrich has a long history, the earliest ostrich appeared in the primitive society of Europe, its species are numerous, and they are distributed on all continents of the world. But by the 19th century, only the African ostrich remained. The ostrich has a long neck, a pair of large brown eyes, a stubby torso, a flattened sternum, no keel, and a pair of short wings that appear to be particularly disproportionate to the body, which has degenerated and is not capable of flying.

Now the ostrich's wings are displayed during the breeding period, when courting the female.

2. The flight ability of the ostrich is degraded The ancestors of the ostrich can fly, and later the ostriche's flight ability is degraded, which is closely related to its living environment. Once upon a time, ostriches lived in open grasslands and deserts, where ostriches lived in harsh conditions, and they were good at running to avoid predators. Later, it gradually became more comfortable to live in a comfortable environment, and it no longer needed to fly for food, and the ostrich became heavier and heavier.

Therefore, the ability to run is gradually lost, and they begin to become more and more good at running.

3. The growth habits of ostrichesThe ostrich is the only bird in the world that has only two toes, and since it is good at running, it has particularly well-developed toes. It can run at speeds of up to 70 kilometers per hour, and its thick legs can also put a lion or leopard to death. Ostriches have a very mixed diet, mainly feeding on the stems, leaves, and fruits of plants.

Ostriches are now widely distributed in Eurasia and northern Africa, as well as in zoos in most cities.

Dear readers, do you all understand by now?

Because their feathers are very light and their wings are small, they cannot support their large bodies to fly into the sky.

Yes. Because of the power of the ostrich's wings, it cannot fly with the help of the wind, and its weight is relatively heavy.

It's not that its wings don't work, it's that its ability to fly has long since deteriorated.

Because the ostrich's wings have degenerated in the long reproduction, and the ostrich is so heavy that the wings cannot be brought up at all.

Answer: Because ostriches are relatively large and have small wings. We all know that ostriches are relatively large and have very heavy bodies. So its wings can't carry its body.

The ostrich is so heavy, even if its wings are hard, it can't fly, because it doesn't want to fly at all, and it thinks it's better on the ground than in the air.

Ostriches are affected and changed by the living environment of qi, although they have wings, their functions have deteriorated, their bodies gradually become heavier, and their wings are also overwhelmed.

The ostrich has evolved to its current state, and it is no longer able to drive itself, its wings are short, its body is heavy, its sternum is degenerate, and the feathers on its wings cannot support the weight of flight.

Because the ostrich's wings are small and the body is so heavy that the wings can't generate enough thrust, it can't fly.

When the swallow flies at its minimum speed, m1

g=cs1v1

When the ostrich spreads its wings and runs at its maximum speed, the lifting force obtained is: f2cs2v2 and ss

Then vv gets: v2100km h

Therefore, b

(1) The critical velocity of the ostrich that can fly just enough should be satisfied: f=g, that is, csv2=mg, and v=

mgcs2) from the question: the mass of the bird m l3, the wing area s l2, the minimum flight speed of v l swallow is v, the minimum speed v required for the ostrich to fly, then the minimum speed v required for the ostrich to fly should meet v v

l′l＝25

1 5 gives v = 5v =

The actual running speed of the ostrich is only 40km h=, which shows that the ostrich cannot fly Answer: (1) The critical rate of bird take-off is.

mgcs2) ostriches really grow a pair of wings proportional to their body size, and they can't fly