"The adult male, has a white breast, rufous face, upperparts, flanks and tail and an iridescent orange-red throat patch (gorget). Some males have some green on back and/or crown. The female has green upperparts with some white, some iridescent orange feathers in the center of the throat, and a dark tail with white tips and rufous base. Females and the rare green-backed males are extremely difficult to differentiate from Allen's Hummingbird." - Wikipedia
Cape Honeysuckle in the backyard.
These birds are very territorial and protect this area of the yard from even hawks. They swoop down and chase them away!