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.
National Audubon Society
Audubon Adventures: Hummingbird Who's Who
About 328 species of hummingbirds flit and flutter in the Western Hemisphere. Just 14 species regularly nest and raise young in the United States. The six species included on this site all include the United States in their breeding...