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Side-by-Side Comparison

属性	Rufous-tailed Hummingbird	Sword-billed Hummingbird
学名	Amazilia tzacatl	Ensifera ensifera
目	Caprimulgiformes	Caprimulgiformes
科	Trochilidae	Trochilidae
保全状況	Least Concern	Least Concern
体長	—	—
翼開長	11.3 cm (4.4 in)	15.3 cm (6.0 in)
体重	5.04 g (0.18 oz)	12.75 g (0.45 oz)
食性	Common lowland nectarivore of Central America; visits Heliconia, banana, and garden flowers. Supplements with 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

Rufous-tailed Hummingbird only

None

Sword-billed Hummingbird only

🌾 Grassland

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Song & Call Comparison

Rufous-tailed Hummingbird

さえずり

Deep, resonant trill with buzzing character; powerful churring vibration carrying across open hillside.

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

Rufous-tailed Hummingbird

Widely distributed from Mexico through Central America to western Ecuador. Resident in varied lowland habitats.

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

Rufous-tailed Hummingbird

Least Concern

Sword-billed Hummingbird

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How to Tell Them Apart

Rufous-tailed Hummingbird

羽毛

Rufous Coucal: entirely rufous-brown overall; long dark graduated tail; red eye; monochromatic rufous plumage; sexually similar

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

Rufous-tailed Hummingbird

メキシコから南米北西部にかけて広く分布するハチドリ（体長9〜11cm）。金属光沢のある緑色の体と赤褐色の尾羽が特徴。Amazilia tzacatl（ルーフォウステイルドアマゾンハチドリ）は標高0〜2,500mの熱帯・亜熱帯林縁、庭園、農地に生息し、様々な花の蜜を吸う。中央アメリカで最もよく見られるハチドリの一つ。Trochilidae科。

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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