Long before humans walked the Earth, the skies of South America were ruled by a colossal bird. Argentavis magnificens, one of the largest flying birds ever discovered, had a wingspan so wide that it ...

Generally, birds are known to be graceful, fast, and capable of soaring over the vast expanse of the sky. However, the most interesting and fascinating birds in the world are known to be large and not ...

Millions of birds invisibly migrate through the night sky each autumn, most flying in near silence toward their wintering ...

A Haast’s eagle attacks a moa pair. John Megahan, PLOS Biology, 3(1): e20 via Wikipedia under CC By 2.5 Evolution has a fondness for big birds. During the past 66 million years, repeated on different ...

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 ...