Black-bellied Hummingbird

The black-bellied hummingbird is 7 to 8 cm (2.8 to 3.1 in) long and weighs about 3.0 to 3.5 g (0.11 to 0.12 oz). Males have a black breast and belly that provide the species' English name; their forehead and face are also black. The sides of the breast are green and the undertail coverts white. They have mostly bronze green upperparts with narrow black edges on the crown feathers and dull bronze uppertail coverts. Their central tail feathers are dull black with a bronze gloss and the outer ones white. The female has grayish white underparts with white undertail coverts. Voice: The black-bellied hummingbird's song is "a high, thin, sputtering warble", typically given from perches at the edge of gaps in the forest. Its calls include "a sharp, high-pitched tseep or peet" and "a high, tsittering in chases".