Velvet-purple Coronet

The velvet-purple coronet is 11 to 12.7 cm (4.3 to 5.0 in) long and weighs 8.0 to 8.5 g (0.28 to 0.30 oz). Both sexes have a short, straight, black bill and a white spot behind the eye. Both have a notched tail, though the female's is less deeply indented than the male's, and both have small white puffs on the legs. Males have a velvety black head with a glittering purplish blue crown; the rest of the upperparts are shining bluish green. The throat is velvety black and the breast and belly glittering purplish blue. The underwing coverts are cinnamon and show in flight. Voice: The velvet-purple coronet's courtship song is described as a "series of alternating harsh and soft whistles, 'si, siii, si, siii, si, siii...'".