Black-chinned Hummingbird vs Rufous-booted Racket-tail
Archilochus alexandri 对比 Ocreatus addae
Side-by-Side Comparison
| 属性 | Black-chinned Hummingbird | Rufous-booted Racket-tail |
|---|---|---|
| 学名 | Archilochus alexandri | Ocreatus addae |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Not Evaluated |
| 体长 | — | — |
| 翼展 | 8.5 cm (3.3 in) | — |
| 体重 | 3.6399999999999997 g (0.13 oz) | 3.0 g (0.11 oz) |
| 食性 | Generalist nectarivore visiting a wide variety of western North American flowers. Gleans insects and spiders … | Nectarivore of Bolivian and Peruvian cloud forest; visits Ericaceae and bromeliads. Gleans small insects from … |
| 产卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Black-chinned Hummingbird
Rapid, animated twittering with bright quality; light staccato notes cascading freely in cheerful sequence.
Rufous-booted Racket-tail
Deep, resonant hum barely audible; extremely low vibration barely perceptible during hovering near high-altitude flowers.
Geographic Range & Migration
Black-chinned Hummingbird
Found in western North America from British Columbia to Mexico. Breeds in open woodland; winters in western Mexico.
Rufous-booted Racket-tail
Found in cloud forests of northern Bolivia and adjacent Peru and Brazil at 400–1,400 m elevation.
保护状况
Black-chinned Hummingbird
Rufous-booted Racket-tail
How to Tell Them Apart
Black-chinned Hummingbird
White-eared Hummingbird: males with brilliant violet-blue gorget; metallic green above; white postocular stripe; females green; spotted
Rufous-booted Racket-tail
Golden-bellied Starfrontlet: tiny; males with brilliant orange-gold belly; violet gorget; females green above; spotted buff below
About These Birds
Black-chinned Hummingbird
一种小型蜂鸟（8至9厘米），分布于北美西部至墨西哥。雄鸟具有黑色颏部，边缘呈彩虹色紫色。栖息于开阔林地、花园和沙漠绿洲，以花蜜为食。繁殖季节常见于美国西部的喂食器旁。
Rufous-booted Racket-tail
A small hummingbird (8-10 cm plus tail rackets) found in Andean cloud forests of southeastern Peru and Bolivia at 1,200-2,200 m. Males have rufous leg puffs instead of white. Recently split from Booted Racket-tail. Nectarivore of montane forest undergrowth.