Question

Birds minimize the resistance of air while flying why​

Answer 1

• 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.

Answer 2

Answer:

Long bones of endoskeleton and pneumatic having air cavities. All birds are toothless; their jaws are modified into honey beaks. Body is streamlined to reduce air resistance during its flight. Birds have air sacs helping in double respiration.