Do you know why blue-footed boobies have blue feet? Author Laura Erickson does, and you’ll find the answers to this and many other great questions in her book, The Bird Watching Answer Book. (For the ...

Flightless species of birds (such as ostriches, which are the largest living birds) tend to outsize any of the largest birds ...

A fleshy membrane wing would cover these limbs. But to actually fly, the rest of our body would have to produce enough power, which would require strong muscles. In birds, an average of 16% to 18% ...

The wings of some species flap up to a hundred ... Marc Badger of UC Berkeley elicits such acrobatics in the lab by having birds fly through small apertures, a situation the photographer re ...

Insects, interestingly, have evolved a very different approach to flying than that of birds and bats, whose wings evolved from arms. They have no muscles or nerves in their wings; instead some ...