The Black-throated Mango (Anthracothorax nigricollis) – called mango because of its attraction to the tropical fruit tree – is the only predominantly green hummingbird with extensive black throat and underparts. The longish black bill is slightly decurved. The tail in both sexes has dark central feathers, the outer tail being wine-red tipped with black. The male has glossy bright green upperparts. His throat and chest are matt black, bordered with blue-green. The flanks are bright green, and the black of the chest tapers onto the belly. The female black-throated mango has bronze-green upperparts and white underparts with a black central stripe. Immature birds show some grey or buff feather tips on the head and wings, and have brown around the eyes.
Black throated mango hummingbird