Gorgeted Puffleg

The gorgeted puffleg is 8 to 9 cm (3.1 to 3.5 in) long and weighs about 4.5 g (0.16 oz). It has a short, straight, black bill. Unique among pufflegs, the male has a glittering violet-blue gorget edged with green. The male's upperparts are mostly blackish with golden olive green iridescence; the rump has a green gloss. The moderately forked tail is dark steely blue. The breast and belly are velvety black with green gloss on the sides and the undertail coverts are blue. The leg puffs are white. The eye is dark brown and the legs blackish. Voice: As of early 2022, no recordings of gorgeted puffleg vocalizations were available at Xeno-canto or Cornell University's Macaulay Library. Its song is unknown, but a territorial call is described as "a frequently repeated monosyllabic, sharp 'twek'" that is pitched lower than those of others of its genus.