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Side-by-Side Comparison

属性	Coppery Thorntail	Sword-billed Hummingbird
学名	Discosura letitiae	Ensifera ensifera
目	Caprimulgiformes	Caprimulgiformes
科	Trochilidae	Trochilidae
保护状况	Data Deficient	Least Concern
体长	—	—
翼展	7.5 cm (3.0 in)	15.3 cm (6.0 in)
体重	2.8 g (0.10 oz)	12.75 g (0.45 oz)
食性	Nectarivore with elongated tail foraging at high canopy blooms. Catches small insects near flowering trees.	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

Coppery Thorntail only

无

Sword-billed Hummingbird only

🌾 Grassland

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Song & Call Comparison

Coppery Thorntail

鸣唱

Soft, high peep followed by short buzzy trill; quiet introductory note launching into brief rough continuation.

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

Coppery Thorntail

Known only from Bolivia; restricted range in humid lowland forest of the Beni region. 150–500 m elevation.

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

Data Deficient

Coppery Thorntail

Least Concern

Sword-billed Hummingbird

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How to Tell Them Apart

Coppery Thorntail

羽毛

Rufous Puffleg: males shining bronze-green; iridescent teal gorget; white underparts; large rufous leg puffs; females duller with spots

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

Coppery Thorntail

A tiny hummingbird (7-8 cm) known from very few specimens collected in Bolivia. Coppery plumage. Almost nothing known about its ecology or current status. One of the most mysterious hummingbirds; possibly rare, possibly overlooked. Further fieldwork needed.

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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