From mountain ranges to thin air far above the ground, certain birds are built to fly higher than any others. These species push the limits of altitude with specialized lungs, strong wings, and ...
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 ...
More than 99% of birds can fly. But that still leaves many species that evolved to be flightless, including penguins, ostriches, and kiwi birds. In a new study in the journal Evolution, researchers ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results