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Side-by-Side Comparison

属性	White-tufted Sunbeam	Sword-billed Hummingbird
学名	Aglaeactis castelnaudii	Ensifera ensifera
目	Caprimulgiformes	Caprimulgiformes
科	Trochilidae	Trochilidae
保护状况	Near Threatened	Least Concern
体长	—	—
翼展	14.8 cm (5.8 in)	15.3 cm (6.0 in)
体重	7.35 g (0.26 oz)	12.75 g (0.45 oz)
食性	Nectarivore of Peruvian high-altitude scrub; forages at Chuquiraga and Ericaceae blooms. Supplements with small arthropods.	Nectarivore uniquely adapted to extremely long flowers of Passiflora and Datura. Supplements with small insects …
产卵数	--	--
Population Trend	—	—

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Habitat Comparison

共同栖息地

🌲 Forest

White-tufted Sunbeam only

无

Sword-billed Hummingbird only

🌾 Grassland

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Song & Call Comparison

White-tufted Sunbeam

鸣唱

Melodic, pure ascending phrase; clear flute-like tones rising smoothly in quiet musical sequence at high altitude.

Sword-billed Hummingbird

鸣唱

Thin, reedy whistle with plaintive character; soft nasal tone held briefly then gently fading in mist.

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Geographic Range & Migration

White-tufted Sunbeam

Endemic to Peru in high Andean puna and scrub, primarily in the Apurímac and Ayacucho regions. 3,200–5,000 m.

Sword-billed Hummingbird

Found in Andean cloud forests from Venezuela south through Colombia, Ecuador, Peru, and Bolivia. 1,700–3,500 m.

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保护状况

Near Threatened

White-tufted Sunbeam

Least Concern

Sword-billed Hummingbird

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How to Tell Them Apart

White-tufted Sunbeam

羽毛

Golden-breasted Puffleg: males with glittering golden-green gorget; metallic bronze-green above; females green above; spotted below

Sword-billed Hummingbird

羽毛

Olivaceous Thornbill: males with iridescent purple gorget; metallic olive-bronze above; white underparts; females green above; spots

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About These Birds

White-tufted Sunbeam

铜紫辉蜂鸟（Aglaeactis castelnaudii），体长12-13厘米，分布于秘鲁和玻利维亚安第斯山脉，海拔2,700至4,000米。属蜂鸟科（Trochilidae），背部具铜紫色辉光，是高安第斯特有种。

Sword-billed Hummingbird

剑嘴蜂鸟。嘴与身体等长（8-10厘米）。栖息于安第斯云雾林。专门取食深处的西番莲花蜜。

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