The power behind a ring dove’s trill belongs to the fastest class of vertebrate muscles known, reports a team of physiologists. This is the first demonstration of superfast muscles in a bird, the ...

Migratory songbirds like Swainson's thrushes spend their winters in South and Central America. But as spring approaches, they fly thousands of miles north to Canada. Along the way, these little birds ...

Muscle structure and body size predict the athletic performance of Olympic athletes, such as sprinters. The same, it appears, is true of wild seabirds that can commute hundreds of kilometers a day to ...

DR. CASEY WOOD is an ophthalmic surgeon with a large practice in one of the busiest cities in America. He is a voluminous writer on subjects connected directly with the science and art of his ...