Figure 1: Categories of Flying Birds
Figure 2: Examples of Flightless Birds
Video 1: Birds Vertebrates (5:18)
Video 2: What Happens When You Put a Hummingbird in a Wind Tunnel? (3:26)
Video 3: See What Makes Owls So Quiet and So Deadly (3:12)
Video 4: Emperor Penguins (2:53)
Video 5: Amazing Clip Of A Goose Laying An Egg (2:52)
Video 6: The Great Migration (10:17)
Video 7: Bird flu Outbreak - H5N2 Avian Flu Kills over 33 million Chickens (3:59)