Glowing Puffleg
Eriocnemis vestita
The glowing puffleg is 9 to 10 cm (3.5 to 3.9 in) long. Males weigh 3.3 to 7.2 g (0.12 to 0.25 oz) and females 3.6 to 5.3 g (0.13 to 0.19 oz). It has a straight blackish bill. The nominate subspecies' male has shining dark green upperparts with a golden green rump and uppertail coverts. It has a glittering purple throat patch thinly surrounded by golden green. The rest of its throat and its upper breast are shining blackish green, its belly glittering golden green, and its undertail coverts iridescent purplish blue. Its leg puffs are white. The tail is forked and dark steel blue. Voice: The glowing puffleg's only described vocalization is "a single metallic note 'tseek' or doubled 'tsi-tseek', repeated at irregular intervals". It is given both from a perch and while hovering.
ID text from Wikipedia, CC BY-SA 4.0

Golden-breasted Puffleg
Eriocnemis mosquera
The golden-breasted puffleg is about 11 to 13 cm (4.3 to 5.1 in) long and weighs about 5.3 g (0.19 oz). It has a straight black bill. The male has shining green upperparts with a bronzier green nape and rump. Its underparts are mostly glittering golden green. Its lower throat and upper breast are coppery bronze and the undertail coverts brownish. Its leg puffs are white. The tail is forked; its central feathers are blue-green and the outer two pairs dark green to blue-black. The female is slightly smaller and has somewhat greener undertail coverts but is otherwise similar to the male. Voice: The golden-breasted puffleg's calls are "trit notes".
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Glowing Puffleg and Golden-breasted Puffleg.