White-bellied Mountaingem

The white-bellied mountaingem is 10 to 11 cm (3.9 to 4.3 in) long. Males weigh about 6.2 g (0.22 oz) and females 5.1 g (0.18 oz). Both sexes have a medium-length black bill, a long white stripe behind the eye, and pinkish feet. Adult males' face and crown are glittering green, much of the rest of the upperparts bronzy green, and the uppertail coverts bronzy. The tail is also bronzy, with dusky gray bands near the end of the outer feathers. The gorget is blue-violet and the rest of the underparts white with green speckles along the sides. Voice: The white-bellied mountaingem's song is "a medley of squeaks, dry or liquid trills, and sputtering notes." When chasing it makes "squeaky sputtering trills". Other calls include "a repeated, somewhat nasal 'deep' rattling sequences 'de-de-drrrrr'."