Bronze-tailed Thornbill vs Allen's Hummingbird
Chalcostigma heteropogon 对比 Selasphorus sasin
Side-by-Side Comparison
| 属性 | Bronze-tailed Thornbill | Allen's Hummingbird |
|---|---|---|
| 学名 | Chalcostigma heteropogon | Selasphorus sasin |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 14.1 cm (5.6 in) | 8.1 cm (3.2 in) |
| 体重 | 5.65 g (0.20 oz) | 3.1500000000000004 g (0.11 oz) |
| 食性 | Nectarivore of high Andean grasslands and shrublands; visits Ericaceae and Gentianaceae blooms. Gleans tiny arthropods. | 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
Bronze-tailed Thornbill
Deep, hollow churring with resonant bass; prolonged low buzzing audible at range through open forest edge.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
Bronze-tailed Thornbill
Found in high Andean grassland and scrub from Venezuela through Colombia to Ecuador at 2,800–4,200 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
Bronze-tailed Thornbill
Allen's Hummingbird
How to Tell Them Apart
Bronze-tailed Thornbill
Mangrove Hummingbird: tiny; males with violet gorget; metallic green above; white-spotted 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
Bronze-tailed Thornbill
铜色金刚尾蜂鸟 (Chalcostigma heteropogon)，体长约13厘米。雄鸟喉部闪铜绿色，上体绿色，尾长，外侧尾羽带紫色。分布于委内瑞拉和哥伦比亚的安第斯山脉北段高海拔地带。以花蜜为主食，也捕食昆虫。
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.