White-tailed Hummingbird vs Allen's Hummingbird
Eupherusa poliocerca 对比 Selasphorus sasin
Side-by-Side Comparison
| 属性 | White-tailed Hummingbird | Allen's Hummingbird |
|---|---|---|
| 学名 | Eupherusa poliocerca | Selasphorus sasin |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Near Threatened | Least Concern |
| 体长 | — | — |
| 翼展 | 12.1 cm (4.8 in) | 8.1 cm (3.2 in) |
| 体重 | 4.625 g (0.16 oz) | 3.1500000000000004 g (0.11 oz) |
| 食性 | Feeds on nectar from flowering shrubs and epiphytes. Catches small insects and spiders to meet … | 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
White-tailed Hummingbird
Harsh, buzzy chatter with emphatic rhythm; coarse rough notes delivered rapidly with raw buzzy texture.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
White-tailed Hummingbird
Endemic to the Sierra Madre del Sur of Guerrero and Oaxaca, Mexico. Classified as Vulnerable due to restricted range.
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
White-tailed Hummingbird
Allen's Hummingbird
About These Birds
White-tailed Hummingbird
白尾叶绿蜂鸟，体长10-11厘米。墨西哥南部马德雷山脉特有种。易危。
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.