Allen's Hummingbird vs Pale-tailed Barbthroat
Selasphorus sasin 比較対象 Threnetes leucurus
Side-by-Side Comparison
| 属性 | Allen's Hummingbird | Pale-tailed Barbthroat |
|---|---|---|
| 学名 | Selasphorus sasin | Threnetes leucurus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 8.1 cm (3.2 in) | 11.5 cm (4.5 in) |
| 体重 | 3.1500000000000004 g (0.11 oz) | 5.42 g (0.19 oz) |
| 食性 | Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with … | Primarily nectarivore; uses its strongly hooked bill to probe for nectar in curved flowers; eats … |
| 一腹卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Pale-tailed Barbthroat
Rapid, buzzing trill with insect-like quality; sustained high-frequency vibration followed by softer descending notes.
Geographic Range & Migration
Allen's Hummingbird
Breeds along the Pacific coast from Oregon to southern California. Partial migrant; some Channel Islands populations resident year-round.
Pale-tailed Barbthroat
Found in the Amazon basin and Guiana Shield from Venezuela and the Guianas south to Peru and Bolivia. Resident in humid forest interior.
保全状況
Allen's Hummingbird
Pale-tailed Barbthroat
How to Tell Them Apart
Allen's Hummingbird
Pale-tailed Barbthroat
Bronze-green upperparts; pale greyish-buff underparts; dark malar stripe; tail pale buff-white with dark subterminal band; lacks the strong black banding of Band-tailed Barbthroat; Amazonian species with paler tail pattern.
About These Birds
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.
Pale-tailed Barbthroat
パールホワイトアーミットはアマゾン盆地北部に生息する珍しいハチドリです。白い尾の先端が特徴的です。