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Side-by-Side Comparison

属性	Xantus's Hummingbird	Sword-billed Hummingbird
学名	Basilinna xantusii	Ensifera ensifera
目	Caprimulgiformes	Caprimulgiformes
科	Trochilidae	Trochilidae
保全状況	Least Concern	Least Concern
体長	—	—
翼開長	10.2 cm (4.0 in)	15.3 cm (6.0 in)
体重	3.525 g (0.12 oz)	12.75 g (0.45 oz)
食性	Endemic to Baja California; feeds on nectar from desert blooms and supplements with small 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

Xantus's Hummingbird only

🏜️ Desert

Sword-billed Hummingbird only

🌾 Grassland

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Song & Call Comparison

Xantus's Hummingbird

さえずり

High, crystalline twittering with bright silvery quality; rapid light notes cascading freely in aerial display.

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

Xantus's Hummingbird

Endemic to the cape region of Baja California Sur, Mexico. Resident in dry scrub and thorn forest.

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

Xantus's Hummingbird

Least Concern

Sword-billed Hummingbird

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How to Tell Them Apart

Xantus's Hummingbird

羽毛

Great Blue Turaco: large; brilliant turquoise-blue body; yellow-red bill; red-tipped yellow crest; black-tipped blue tail; unique

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

Xantus's Hummingbird

メキシコのバハ・カリフォルニア・スール州南端固有の中型ハチドリ（9〜10cm）。緑色の羽毛に赤褐色の胸と白い眼帯を持つ。乾燥した低木地とトゲのある林の蜜食者。ハンガリーの博物学者ジョン・ザンタスにちなんで命名されたバハ・カリフォルニア固有種。

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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