What is the true secret to a bird's ability to fly? Primary Flight Feathers, of course! While a bird's skill at flight is normally attributed to the wings, the truth is that the wings would be useless for flying if the primary flight feathers weren't in place. To learn more about how these fascinating feathers work, check out this quick explanation of the Primary Flight Feathers. You're virtually guaranteed to learn something new!

Photo (c) 2006 Alyson Burgess licensed to About.com, Inc.