Coppery-headed Emerald vs White-tailed Emerald

Coppery-headed Emerald

Microchera cupreiceps

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The coppery-headed emerald is about 7.5 cm (3.0 in) long and weighs about 3.0 to 3.3 g (0.11 to 0.12 oz). Both sexes have a moderately decurved bill whose mandible has a pinkish base. The adult male has a dull coppery bronze crown, a bronze green nape, back, and rump, and bright coppery bronze uppertail coverts. Its central pair of tail feathers are bronze, the next three pairs white with pale gray tips, and the outermost pair white with black tips. Its underparts are bright yellowish metallic green with white undertail coverts. Voice: The coppery-headed emerald's song is a "high, thin, twittering and warbling." Its call has been described as "a high, thin, liquid quip or quit or rapid high sputtering in chases."

ID text from Wikipedia, CC BY-SA 4.0

Photo: Tim Lenz from Ithaca · CC BY 2.0

White-tailed Emerald

Microchera chionura

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The white-tailed emerald is 7.5 to 8 cm (3.0 to 3.1 in) long. Males weigh about 3.3 g (0.12 oz) and females 3.1 g (0.11 oz). Both sexes have an almost straight black bill whose mandible has a pinkish base. The adult male has bronzy green upperparts that becomes dark copper-bronze on the uppertail coverts. Its central two pairs of tail feathers are copper-bronze and the other three pairs white with black tips. It has a glittering green throat and chest and white belly, vent, and undertail coverts. The adult female also has bronzy green upperparts. Voice: The white-tailed emerald's song is "a prolonged, thin scratchy twittering mixed with buzzing or gurgling notes". It also makes "soft scratchy chipping notes" when foraging and "high-pitched, buzzy notes" when chasing.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Anthony Mora Aguilar · CC BY 4.0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Coppery-headed Emerald and White-tailed Emerald.