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The black-chinned hummingbird is 8.25 cm (3.25 in) long. Adults are metallic green above and white below with green flanks. Their bill is long, straight and slender. The adult male has a black face and chin, a glossy purple gorget, and a dark forked tail. The female has a dark rounded tail with white tips and no throat patch.
The black-tailed trainbearer (Lesbia victoriae) is a species of hummingbird in the family Trochilidae. It is found between 2500 and 3800m in Colombia , Ecuador , and Peru . Its natural habitats are subtropical or tropical moist montane forest , subtropical or tropical high-altitude shrubland , and heavily degraded former forest.
The female is about 10.5 cm (4.1 in) long and weighs 3.5 to 5.5 g (0.12 to 0.19 oz). Both sexes have a black bill. The male has a dull black to blue-black crown; it and the nape form a deep velvety black crest. The rest of its upperparts are bright grass green. Its tail is black with a green to bronzy green gloss.
The most common species, the white-bearded helmetcrest, measures 11.4 cm (4.5 in) in length, it is a small hummingbird with a very small 8 mm (0.31 in) bill. The adult male has a distinctive pointed black crest and a shaggy white beard. The face and cheeks are blackish, rendering a triangular shape with the white fronted crest and white beard.
Xantus's hummingbird is 8.5 to 9.5 cm (3.3 to 3.7 in) long. Males weigh an average of 3.5 g (0.12 oz) and females 3.4 g (0.12 oz). Their bills are straight and about 1.7 cm (0.67 in) long; males' are red with a black tip. Females' maxilla is black with a pinkish base and their mandible pinkish red with a black tip.
White-tailed hummingbird: Eupherusa poliocerca Elliot, DG, 1871: 308 Oaxaca hummingbird: Eupherusa cyanophrys Rowley, JS & Orr, 1964: 309 Stripe-tailed hummingbird: Eupherusa eximia (Delattre, 1843) 310 Black-bellied hummingbird: Eupherusa nigriventris Lawrence, 1868: 311 Scaly-breasted hummingbird: Phaeochroa cuvierii (Delattre & Bourcier ...
The streamertails are hummingbirds in the genus Trochilus, that are endemic to Jamaica. It is the type genus of the family Trochilidae. Today most authorities consider the two taxa in this genus as separate species, but some (e.g. AOU) continue to treat them as conspecific, in which case scitulus is a subspecies of T. polytmus.
The blue-throated mountaingem is the largest hummingbird found in the United States. It is 11.2 to 12.8 cm (4.4 to 5.0 in) long. Males weigh an average of 8.4 g (0.30 oz) and females 6.8 g (0.24 oz). Both sexes have a medium-length black bill, though there is some variation among the subspecies and females' bills are longer than males'.