Берилловая амазилия Saucerottia beryllina

Medium-sized hummingbird, usually fairly common in foothills. Favors oak woodlands, adjacent brushy thickets, and shade-coffee plantations, in both drier and more humid situations. Feeds at all levels and often rather aggressively chases off most other hummingbirds. Note the bright rusty wing patch and rusty tail (which often has purple and bronze highlights). Lower bill is red, but is often hard to see. Sexes similar, but female has duller, less buffy belly; birds from Chiapas south have a green belly.