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Rufous Hummingbird (Selasphorus rufus)

Often described as "feisty," the Rufous may have the ideal size-to-weight
ratio among North American hummingbirds. This bird outflies all other
species, and usually gets its way at feeders at the expense of slower,
less-maneuverable hummers. The Rufous has the longest migration route
of all US hummingbirds. It is also the only species known to go into
torpor routinely at night (other species only use torpor to conserve
energy in emergencies).

Physical Description

Average weight: male 3.22 g, female 3.41 g. Females are larger than males.

Plumage
Adult male: Non-iridescent rufous back, crown, tail, and sides; bright
orange-red gorget, white breast.

Adult female: Green back and crown, white breast, streaked throat,
rufous sides and base of tail feathers, white tips on outer tail feathers.
Very similar to female Allen's and Broad-tailed

Distribution

Observed in every state and province except Hawaii, Prince Edward
Island, and Quebec. There was even one very unusual report from
extreme eastern Siberia! The Rufous is the most widely-distributed
hummingbird in North America. Winters in Mexico and possibly Panama.