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Side-by-Side Comparison

属性	Violet-tailed Sylph	Golden-bellied Starfrontlet
学名	Aglaiocercus coelestis	Coeligena bonapartei
目	Caprimulgiformes	Caprimulgiformes
科	Trochilidae	Trochilidae
保护状况	Least Concern	Least Concern
体长	—	—
翼展	12.4 cm (4.9 in)	15.0 cm (5.9 in)
体重	5.483333333333334 g (0.19 oz)	6.800000000000001 g (0.24 oz)
食性	Nectarivore with elongated tail foraging at diverse montane flowers. Catches small arthropods near flowering bromeliads.	Nectarivore of Colombian and Venezuelan cloud forest; forages at Ericaceae and Clusia. Takes small insects …
产卵数	2	2
Population Trend	—	—

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Habitat Comparison

共同栖息地

🌲 Forest

Violet-tailed Sylph only

无

Golden-bellied Starfrontlet only

无

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Song & Call Comparison

Violet-tailed Sylph

鸣唱

Sharp, emphatic two-note call; first note high and accented, second softer and brief, delivered at measured pace.

Golden-bellied Starfrontlet

鸣唱

High, crystalline twittering with silvery sheen; rapid light notes cascading brightly in active display sequences.

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Geographic Range & Migration

Violet-tailed Sylph

Found on the western Andean slope and Pacific foothills of Colombia and Ecuador in humid forest. 300–1,600 m.

Golden-bellied Starfrontlet

Found in cloud forest of the eastern Andes of Colombia and western Venezuela at 1,800–2,800 m.

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保护状况

Least Concern

Violet-tailed Sylph

Least Concern

Golden-bellied Starfrontlet

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How to Tell Them Apart

Violet-tailed Sylph

羽毛

Allen's Hummingbird: males with brilliant copper-orange back; glittering red-orange gorget; green crown; females green above with rufous

Golden-bellied Starfrontlet

羽毛

Green-headed Hillstar: males with glittering green head; metallic green above; white underparts; females green above; spotted buff below

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About These Birds

Violet-tailed Sylph

紫尾宝石蜂鸟（Aglaiocercus coelestis），体长10厘米（雄鸟尾羽另加13厘米），特产于哥伦比亚和厄瓜多尔西部安第斯山脉。属蜂鸟科（Trochilidae），雄鸟体羽蓝绿色，尾羽飘逸，是安第斯山区最美丽的蜂鸟之一。

Golden-bellied Starfrontlet

金腹星额蜂鸟(Coeligena bonapartei)是一种体长13-14厘米的中型蜂鸟，分布于委内瑞拉至哥伦比亚海拔1800-3200米的安第斯云雾林。雄鸟具有金色腹部和彩虹色星状前额斑块。以花蜜为食。

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