Rainbow-bearded Thornbill vs Allen's Hummingbird
Chalcostigma herrani 比較対象 Selasphorus sasin
Side-by-Side Comparison
| 属性 | Rainbow-bearded Thornbill | Allen's Hummingbird |
|---|---|---|
| 学名 | Chalcostigma herrani | Selasphorus sasin |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 13.5 cm (5.3 in) | 8.1 cm (3.2 in) |
| 体重 | 6.183333333333334 g (0.22 oz) | 3.1500000000000004 g (0.11 oz) |
| 食性 | Nectarivore of Colombian and Venezuelan montane scrub; visits diverse small flowers. Supplements with small insects. | Feeds on nectar from coastal sage scrub and forest flowers in California. Supplements diet with … |
| 一腹卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Rainbow-bearded Thornbill
Thin, reedy trill with wavering quality; soft rapid notes with gentle tremolo effect, given from dense cover.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
Rainbow-bearded Thornbill
Found in high Andean páramo and shrubby forest edge from Colombia south to Ecuador and Peru. 2,600–4,400 m.
Allen's Hummingbird
Breeds along the Pacific coast from Oregon to southern California. Partial migrant; some Channel Islands populations resident year-round.
保全状況
Rainbow-bearded Thornbill
Allen's Hummingbird
How to Tell Them Apart
Rainbow-bearded Thornbill
Snowcap: males with brilliant iridescent blue-violet gorget; snow-white crown; metallic green above; females green above; spotted below
Allen's Hummingbird
Fiery-throated Hummingbird (alt): males with brilliant multicolored gorget; metallic green above; females duller; pale buff below
About These Birds
Rainbow-bearded Thornbill
コロンビアからエクアドルのアンデスのパラモ（2,800〜4,000 m）に生息する小型ハチドリ（10〜11 cm）。雄は緑から金を経て紫まで変化する虹色の髭状羽毛を持つ。高山の花蜜食性。
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.