Rufous Hummingbird

Adult male: Non-iridescent rufous crown, tail, and sides; back may be rufous, green , or some of each; bright orange-red gorget, white breast. Green-backed Rufous cannot be reliably separated from Allen's in the field without extensive experience and a good view of the spread tailfeathers through a scope.
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.