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Side-by-Side Comparison

属性	Olivaceous Thornbill	Sword-billed Hummingbird
学名	Chalcostigma olivaceum	Ensifera ensifera
目	Caprimulgiformes	Caprimulgiformes
科	Trochilidae	Trochilidae
保全状況	Least Concern	Least Concern
体長	—	—
翼開長	16.3 cm (6.4 in)	15.3 cm (6.0 in)
体重	7.3999999999999995 g (0.26 oz)	12.75 g (0.45 oz)
食性	Nectarivore of high Bolivian and Peruvian páramo; short bill accesses small open flowers. Gleans insects …	Nectarivore uniquely adapted to extremely long flowers of Passiflora and Datura. Supplements with small insects …
一腹卵数	2	--
Population Trend	—	—

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Habitat Comparison

共通生息地

🌲 Forest 🌾 Grassland

Olivaceous Thornbill only

None

Sword-billed Hummingbird only

None

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Song & Call Comparison

Olivaceous Thornbill

さえずり

Buzzy, high-frequency trill with insect-like quality; sustained continuous vibration with rapid amplitude modulation.

Sword-billed Hummingbird

さえずり

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

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Geographic Range & Migration

Olivaceous Thornbill

Widespread in high Andean puna grassland from Peru to Bolivia and northwestern Argentina. 3,200–4,800 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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保全状況

Least Concern

Olivaceous Thornbill

Least Concern

Sword-billed Hummingbird

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How to Tell Them Apart

Olivaceous Thornbill

羽毛

Blue-tufted Starthroat: males with iridescent blue-green gorget; metallic green above; white pectoral tufts; females green above; 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

Olivaceous Thornbill

ペルーからボリビアのアンデスのプナとパラモ（3,500〜4,800 m）の小型ハチドリ（11〜12 cm）。オリーブ緑色の羽衣にほんのわずかな喉の虹色。高高度の開花植物で花蜜を吸う。

Sword-billed Hummingbird

アンデスの雲霧林に生息するハチドリで、体と同じ長さの嘴を持つ。自然界で嘴が最も長い鳥の一つ。

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