These hummingbirds have the longest known avian migration proportional to their body size, migrating over 1,500 km from Alaska to Mexico. Migration occurs between March and May. Nests are open cups placed in a shrub or on a small twig or branch of trees like conifers. Clutch size is two eggs. Upon hatching, the birds are helpless and naked.
- Rufous Hummingbird: Selasphorus rufus (Audubon WatchList, National Audubon Society)
- Rufous Hummingbird: Selasphorus rufus (All About Birds, Cornell Lab of Ornithology)
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