Question

why there is no air resistance during filght of birds ..........​

Answer 1

Answer:

A bird's wing produces lift and thrust during the downstroke. The air is deflected downwards and also to the rear. The bird reduces its angle of attack and partially folds its wings on the upward stroke so that it passes through the air with the least possible resistance. Basically, birds' bodies are streamlined to help overcome air-resistance.

Explanation:

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Answer 2

Answer:

There is no air resistance during flight of birds because the shape of the body of a bird is spindle shape which reduces the air resistance during flight.

Explanation:

• In birds during flight the feather also reduces the weight of the body which helps in flight for birds.
• in birds the bones are hollow which reduces the weight of the body.
• Otherwise the human also flies but they cannot because of not hollow bones and having weight.