Azure-crowned Hummingbird
Saucerottia cyanocephala
The azure-crowned hummingbird is 10 to 11.5 cm (3.9 to 4.5 in) long. Males weigh an average of about 5.8 g (0.20 oz) and females average about 5.4 g (0.19 oz). The bills of both sexes of both subspecies have a black maxilla and a dull pink mandible with a black outer third. Within a subspecies the sexes are almost alike. Adult males of the nominate subspecies have a bright metallic blue crown and females a duller blue to greenish blue crown. Both sexes have metallic bronze nape and back. They have greenish bronze to bronze green rump, uppertail coverts, and tail. Voice: One vocalization of the azure-crowned hummingbird is "a low, fairly hard, buzzy dzzzrt" that is given in flight and perched; when perched it might be "repeated steadily". It also makes a "fairly mellow, strong chipping at times run into a trill or rattle." The vocalizations of isolated subspecies S. c. chlorostephana might be different but have not been separately described.
ID text from Wikipedia, CC BY-SA 4.0
Steely-vented Hummingbird
Saucerottia saucerottei
The steely-vented hummingbird is 8 to 11 cm (3.1 to 4.3 in) long and weighs about 4.4 to 5.0 g (0.16 to 0.18 oz). Both sexes of all subspecies have a black bill with a pinkish or reddish base to the mandible. Adult males of the nominate subspecies have golden-green upperparts with blue-black uppertail coverts. Their tail is also blue-black. Their underparts are dark glittering golden-green with greenish to steel blue undertail coverts. Adult females have some white on their throat feathers and grayish-brown undertail coverts. Voice: The steely-vented hummingbird's song has not been described in words. Its calls have been described as "a high, sharp tsit or dry chit, sometimes uttered in sputtering 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: Azure-crowned Hummingbird and Steely-vented Hummingbird.