Question

A bird while flying takes a left turn. Where does it get the the required centripetal force from ?

Answer 1

Answer ⇒  While Flying in  the air, when the Bird takes the Tern, it turns a little. When it turn the Horizontal component of the Normal Force balances the Wings of the Bird as a result of which it does not fall and it gets the proper Centripetal force.

I means that It  presses the air with greater area of the underside. Now, As per Newton's Third Law of Motion the air underneath also exerts equal and opposite force on the bird, like normal force on a banked circular road. As a result it gets balanced due to centripetal force which is provided by the Horizontal component of the Normal Reaction.

Hope it helps.

Answer 2

Bird gets normal reaction from air