Allen's Hummingbird vs Red-billed Streamertail
Selasphorus sasin 비교 대상 Trochilus polytmus
Side-by-Side Comparison
| 속성 | Allen's Hummingbird | Red-billed Streamertail |
|---|---|---|
| 학명 | Selasphorus sasin | Trochilus polytmus |
| 목 | Caprimulgiformes | Caprimulgiformes |
| 과 | Trochilidae | Trochilidae |
| 보전 상태 | Least Concern | Least Concern |
| 체장 | — | — |
| 날개 폭 | 8.1 cm (3.2 in) | 11.8 cm (4.6 in) |
| 체중 | 3.1500000000000004 g (0.11 oz) | 4.9 g (0.17 oz) |
| 식성 | Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with … | Visits flowering trees and epiphytes for nectar; supplements diet with small arthropods including gnats, midges, … |
| 산란 수 | 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.
Red-billed Streamertail
Sharp, emphatic two-note call; high accented first note followed by lower brief second, clearly projected.
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.
Red-billed Streamertail
Endemic to Jamaica. National bird. Resident across the island in forests, gardens, and plantations at all elevations.
보전 상태
Allen's Hummingbird
Red-billed Streamertail
How to Tell Them Apart
Allen's Hummingbird
Fiery-throated Hummingbird (alt): males with brilliant multicolored gorget; metallic green above; females duller; pale buff below
Red-billed Streamertail
Goliath Coucal: large; dark glossy black-brown above; rufous wings; dark streaked below; red eye; massive size; long graduated tail
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.
Red-billed Streamertail
수트꼬리 벌새는 자메이카 고유종으로 몸 9~10cm에 수컷은 15~18cm의 꼬리 장식 깃털을 가집니다. 수컷은 두 개의 매우 긴 검은 꼬리 깃털이 특징이며, 다양한 높이의 서식지에서 생활합니다.