Do migratory birds have special lungs?

These birds are made to migrate and thus of course they have special lungs too by which they can fly so long. birds have hollow bones thus they r light in weight and also have no bone marrow. ts truely unbelievable to see these birds in such large groups migrating from one place to another.

All birds have a special lung arrangement, whereby the air travels out by a different path from which it enters, passing through hollow bones to bypass the entering air. This allows for more efficient gas exchange. Since a differential concentration gradient is maintained. Furthermore, birds have other adoptions to flight. There body temperature is higher, allowing faster energy conversion and biochemical processes. Their bones are hollow for lightness. all the best urban