Black-crested Coquette

The black-crested coquette is 6.3 to 7.7 cm (2.5 to 3.0 in) long with an average weight of 2.6 to 2.8 g (0.092 to 0.099 oz). The adult male has a dark metallic green crown with a wispy greenish black crest. The nape and back are metallic bronze green; a white band separates the back from the sooty blackish rump and uppertail coverts. The central tail feathers are dull greenish bronze between their cinnamon rufous bases and dusky ends. The outer tail feathers are cinnamon rufous. The chin and upper throat are metallic yellowish green with a velvety black band below. Voice: The black-crested coquette is usually silent. A vocalization thought to be its song is "a clear, upslurred tsuwee, repeated". It has also been reported making a "thin, high twittering when fighting and a quiet, slightly metallic teek when feeding".