Black-thighed Puffleg vs Allen's Hummingbird
Eriocnemis derbyi 对比 Selasphorus sasin
Side-by-Side Comparison
| 属性 | Black-thighed Puffleg | Allen's Hummingbird |
|---|---|---|
| 学名 | Eriocnemis derbyi | Selasphorus sasin |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 11.2 cm (4.4 in) | 8.1 cm (3.2 in) |
| 体重 | 5.25 g (0.19 oz) | 3.1500000000000004 g (0.11 oz) |
| 食性 | Nectarivore of Colombian Andes; visits dense Ericaceae patches at high elevations. Catches small insects in … | Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with … |
| 产卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Black-thighed Puffleg
Rapid, buzzy trill with slightly harsh quality; quick series of rough notes given persistently near territorial boundaries.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
Black-thighed Puffleg
Found in high Andean cloud forests and páramo from Colombia south through Ecuador to northern Peru. 2,400–3,600 m.
Allen's Hummingbird
Breeds along the Pacific coast from Oregon to southern California. Partial migrant; some Channel Islands populations resident year-round.
保护状况
Black-thighed Puffleg
Allen's Hummingbird
How to Tell Them Apart
Black-thighed Puffleg
Fawn-breasted Brilliant: males with brilliant violet gorget; metallic bronze-green; fawn-buff underparts; females green above; spotted
Allen's Hummingbird
Fiery-throated Hummingbird (alt): males with brilliant multicolored gorget; metallic green above; females duller; pale buff below
About These Birds
Black-thighed Puffleg
黑腿毛腿蜂鸟，体长10-11厘米。分布于哥伦比亚至厄瓜多尔，海拔2500-3200米。近危。
Allen's Hummingbird
A small hummingbird (8-9 cm) breeding along the Pacific coast from Oregon to southern California. Males have an orange-red throat and rufous flanks. Closely related to Rufous Hummingbird. Partial migrant; some populations resident on Channel Islands. Named after Thomas Allen.