Costa's Hummingbird vs Allen's Hummingbird
Calypte costae 对比 Selasphorus sasin
Side-by-Side Comparison
| 属性 | Costa's Hummingbird | Allen's Hummingbird |
|---|---|---|
| 学名 | Calypte costae | Selasphorus sasin |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | — | — |
| 翼展 | 8.9 cm (3.5 in) | 8.1 cm (3.2 in) |
| 体重 | 3.4000000000000004 g (0.12 oz) | 3.1500000000000004 g (0.11 oz) |
| 食性 | Nectarivore of Mojave Desert scrub, favouring desert lavender and sage. Supplements nectar with insects and … | 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
Costa's Hummingbird
Melodic, flute-like ascending scale; smooth bright notes climbing steadily in cheerful morning territorial delivery.
Allen's Hummingbird
Deep, resonant churring trill; prolonged low buzzing sound carrying well across broad coastal mangroves.
Geographic Range & Migration
Costa's Hummingbird
Found in arid western North America from California to Mexico. Breeds in desert scrub; some populations resident year-round.
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
Costa's Hummingbird
Allen's Hummingbird
How to Tell Them Apart
Costa's Hummingbird
Crowned Woodnymph: males with brilliant iridescent violet crown; glittering green gorget; metallic green above; females green; spotted
Allen's Hummingbird
Fiery-throated Hummingbird (alt): males with brilliant multicolored gorget; metallic green above; females duller; pale buff below
About These Birds
Costa's Hummingbird
科斯塔蜂鸟，体长8–9厘米，紫色顶冠和喉部，栖息于北美西部干旱地区。
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.