Do migratory birds have special lungs?

By Nic
@academic2 (7009)
July 12, 2007 8:24am CST
It is mind bogling to imagine that a living can remain flying for almost a whole day without getting tired from Europe to africa and later back! Do these birds perch along their migratory routes? Do they have special lungs?
2 responses
@coolcat123 (4391)
• India
13 Jul 07
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.
@urbandekay (18311)
12 Jul 07
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