What are the characteristics and functions of ostrich wings
Ostriches are the largest and heaviest birds in the world. They have to stay on the ground because of the inconvenience of foraging in the air. Over time, their wings degenerate and become unable to fly. So what are the characteristics and functions of ostrich wings?
What are the characteristics and functions of ostrich wings?
It is mainly used to balance the body. In spring, when looking for female ostriches, you should open and dance, and the best one wins. When fighting with the enemy, you should open and close your wings to give yourself courage.
Why can't ostriches fly?
Ostriches cannot fly not because of wing size and muscle ability, but because they do not have flying feathers and tail feathers and tail fat glands.
Ostriches are too heavy and often forage and move on the ground. Over time, their wings begin to degenerate. Their feathers no longer have flying feathers and tail feathers, and they have no featherless caudal glands, which are used to secrete oil to protect their feathers from deformation. Flying birds have no feathers in some places, that is, the feather area and naked area, but ostrich feathers grow evenly on the whole body surface, there is no distinction between feather area and naked area, and it is impossible to fly.
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The difference between flat crab and swimming crab
Flat crabs generally refer to swimming crabs with swords, also known as hairy crabs. The whole body is orange-red, with white spots on the forehead and swimming limbs, and a purple-red spot at the end of the swimming limb. On the other hand, the body color of swimming crab varies with the surrounding environment, the head and chest nail is light grayish green, and the front gills
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Is the big centipede poisonous?
At the mention of the centipede, I think everyone is not familiar with it, not only has many legs, but also scary, many people are afraid to see it, but it can soak wine, it is a good medicine, is the big centipede poisonous? Is the big centipede poisonous? The big centipede is poisonous, and the poison is on the foot of the head.
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