Birds in Flight: Part I

I have always been fascinated with flight.  Whether it be the ability of birds to fly or an airplane lifting off of the ground.  My challenge here was to get some shots of birds in mid-air.  They have such beautiful form!    Here are some birds in flight.

Check out the following link to learn more about how birds fly:

http://www.life123.com/sports/bird-watching/bird-facts/how-do-birds-fly.shtml