Andean Emerald

The Andean emerald is 9 to 11 cm (3.5 to 4.3 in) long. Males weigh about 5.6 g (0.20 oz) and females about 5.3 g (0.19 oz). Both sexes of all subspecies have a straight to slightly decurved bill of medium length with a blackish maxilla and a coral red mandible with a dark tip. Adult males of the nominate subspecies U. f. franciae have a glittering violet-blue crown and glittering golden- to emerald green cheeks and neck. Their upperparts and flanks are light green to golden-green with a coppery tinge to the uppertail coverts. The center of their underparts is white. Voice: The Andean emerald has a quite variable song, typically described as "a repeated complex phrase of high-pitched squeaky whistles, trills and scratchy notes." It also makes "a high-pitched 'tsip'" call, and during social interactions "scratchy squeaky chatters".