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Side-by-Side Comparison

属性	Long-tailed Sylph	Amazilia Hummingbird
学名	Aglaiocercus kingii	Amazilis amazilia
目	Caprimulgiformes	Caprimulgiformes
科	Trochilidae	Trochilidae
保护状况	Least Concern	Least Concern
体长	—	—
翼展	11.7 cm (4.6 in)	—
体重	5.25 g (0.19 oz)	5.066666666666666 g (0.18 oz)
食性	Nectarivore of Andean cloud forest; forages at Ericaceae and epiphyte blooms. Supplements diet with small …	Feeds on nectar from flowering shrubs and epiphytes. Catches small insects and spiders to meet …
产卵数	2	2
Population Trend	—	—

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Habitat Comparison

共同栖息地

🌲 Forest

Long-tailed Sylph only

🌾 Grassland

Amazilia Hummingbird only

🏜️ Desert 🏖️ Coastal

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Song & Call Comparison

Long-tailed Sylph

鸣唱

Melodic, flowing phrase with rich character; warm notes weaving in relaxed sequence typical of dawn chorus activity.

Amazilia Hummingbird

鸣唱

Buzzy, high-pitched trill with insect-like quality; rapid sustained vibration barely distinguishable from insects.

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Geographic Range & Migration

Long-tailed Sylph

Widespread in Andean cloud forests from Venezuela south through Colombia, Ecuador, Peru, and Bolivia. 1,000–2,800 m.

Amazilia Hummingbird

Found in arid coastal lowlands of western Peru and Ecuador. Resident in desert scrub and river valleys.

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保护状况

Least Concern

Long-tailed Sylph

Least Concern

Amazilia Hummingbird

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How to Tell Them Apart

Long-tailed Sylph

羽毛

Rufous Hummingbird: males with brilliant orange-rufous body; iridescent red gorget; females green above; rufous-washed below

Amazilia Hummingbird

羽毛

Coucal (Celebes): dark glossy black above; rufous wings; pale buff below; long dark tail; red eye; Sulawesi island endemic coucal

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About These Birds

Long-tailed Sylph

长尾青蜂鸟（Aglaiocercus kingii），体长10厘米（雄鸟尾羽另加13厘米），分布于委内瑞拉至玻利维亚安第斯云雾林。属蜂鸟科（Trochilidae），雄鸟体羽闪烁蓝绿色，长尾羽为求偶展示的重要道具。

Amazilia Hummingbird

秘鲁蜂鸟（Amazilis amazilia），体长9-10厘米，分布于秘鲁和厄瓜多尔西部干燥沿海低地。体羽绿色，下体浅色。属蜂鸟科（Trochilidae），是南美洲西部海岸的特有种。

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