San Diego Zoo Global
San Diego Zoo: Hummingbird
This resource provides detailed information on the hummingbird, as well as several vivid photos and a video.
Other
Hummingbirds.net
This entire website is entirely dedicated to hummingbirds. This is a great place to learn more about different hummingbird species, attracting and feeding them, migration patterns, and more.
Defenders of Wildlife
Defenders of Wildlife: Hummingbird
Comprehensive wildlife site provides extensive data on the Hummingbird. Discover more about its' diet, population, range, behavior and more.
Cornell Lab of Ornithology
Cornell Lab of Ornithology: Allen's Hummingbird
Cool facts, photos, and sounds of Allen's Hummingbird are found on this informative site.
Other
Illinois Raptor Center: All Creatures Great and Small
This brief site provides two very interesting pictures which depict the size of hummingbirds when they are born.