Copper-rumped Hummingbird
Saucerottia tobaci
The copper-rumped hummingbird is 9 to 11 cm (3.5 to 4.3 in) long. Males weigh 4.6 to 4.7 g (0.16 to 0.17 oz) and females 3.5 to 4.2 g (0.12 to 0.15 oz). The nominate subspecies S. t. tobaci is the largest. Both sexes of all subspecies have a straight, medium length, blackish bill with a pinkish base to the mandible. Males of S. t. tobaci have bronze-green upperparts with purple-red uppertail coverts. They have dark golden-green underparts with reddish brown undertail coverts. Their tail is purplish black. Voice: The copper-rumped hummingbird's song is "a repeated phrase of three buzzy or squeaky, well-spaced notes 'tee-dee-dew' or 'tee-dzee-djit'." It also makes "high-pitched descending rattles" when foraging.
ID text from Wikipedia, CC BY-SA 4.0

Indigo-capped Hummingbird
Saucerottia cyanifrons
The indigo-capped hummingbird is 7 to 10 cm (2.8 to 3.9 in) long and weighs about 5 g (0.18 oz). Both sexes have a black bill with a red base to the mandible. The adult male has an indigo-blue crown, shining green upperparts with a bronze to coppery gloss on the rump, and bronze to bluish black uppertail coverts. Its tail is deep steel blue. Its underparts are glittering golden green with undertail coverts that vary from bronze-green to dark bluish with whitish edges. The adult female's crown is turquoise-blue towards the rear and its throat feathers have a grayish bar near the end. Voice: The indigo-capped hummingbird's song is "a repeated buzzy, squeaky phrase 'tzuk-keee ... tsrp'." It also makes "a high, sharp 'tsit'" call, sometimes in a series.
ID text from Wikipedia, CC BY-SA 4.0
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Copper-rumped Hummingbird and Indigo-capped Hummingbird.