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
Snowy-bellied Hummingbird
Saucerottia edward
The snowy-bellied hummingbird is 8 to 11 cm (3.1 to 4.3 in) long. Males weigh 5 to 5.4 g (0.18 to 0.19 oz) and females 4.3 to 5.2 g (0.15 to 0.18 oz). Both sexes of all subspecies have a straight blackish bill whose mandible has a reddish base. Adult males of the nominate subspecies S. e. edward have bronze-green upperparts that are especially coppery in the back and rump. Their tail is bronze to coppery and sometimes has a purple sheen. Their throat and chest are glittering golden green, the belly has a V-shaped white center, and the undertail coverts are rufous. Voice: The snowy-bellied hummingbird's song is "a soft 'bebeebee, d’beebee' or 'tseer tir tir'." It also makes "tip" or "tsip" calls.
ID text from Wikipedia, CC BY-SA 4.0
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