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Side-by-Side Comparison

属性	American Crow	Black-collared Jay
学名	Corvus brachyrhynchos	Cyanolyca armillata
目	Passeriformes	Passeriformes
科	Corvidae	Corvidae
保全状況	Least Concern	Least Concern
体長	45.0 cm (17.7 in)	—
翼開長	99.0 cm (39.0 in)	27.7 cm (10.9 in)
体重	450.0 g (15.87 oz)	168.33333333333334 g (5.94 oz)
食性	Highly omnivorous — insects, earthworms, seeds, fruit, eggs, nestlings, carrion, and human food waste. Among …	--
一腹卵数	3-7	--
Population Trend	—	—

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Size Comparison

Body Length

American Crow 45.0 cm

Black-collared Jay —

翼開長

American Crow 99.0 cm

Black-collared Jay 27.7 cm

体重

American Crow 450.0 g

Black-collared Jay 168.33333333333334 g

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Habitat Comparison

共通生息地

🌲 Forest

American Crow only

🌿 Wetland 🏖️ Coastal

Black-collared Jay only

None

American Crow

Extremely adaptable — found in farmland, open woodland, suburban neighborhoods, parking lots, and urban parks.

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Song & Call Comparison

American Crow

さえずり

Classic 'caw-caw-caw' repeated in series. Family groups use distinct dialects. Also gives rattling, knocking, and a short 'cah' flight call. Highly social and vocal.

Black-collared Jay

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Geographic Range & Migration

American Crow

North America from southern Canada through the United States to northern Mexico.

Black-collared Jay

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保全状況

Least Concern

American Crow

Least Concern

Black-collared Jay

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How to Tell Them Apart

American Crow

羽毛

All black with a slight glossy sheen. Squared-off tail and smooth throat distinguish it from the common raven.

くちばし

Straight, sturdy black bill smaller than a raven's

Black-collared Jay

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About These Birds

American Crow

北米全域に広く分布する大型のカラス（体長40〜53cm）。全身光沢のある黒で、知性が高く強い社会性を持つ。Corvus brachyrhynchos（アメリカガラス）は北米で最もよく見られるカラスで、交通量の多い道路に堅い木の実を置いて車に割らせる「道具使用」が観察されている。Corvidae科。

Black-collared Jay

The Black-collared Jay is a striking, medium-sized jay of Andean cloud forests in Colombia, Ecuador, Venezuela, and Peru, with deep blue plumage, a black head, and a distinctive narrow black collar. It inhabits the canopy and edges of humid montane forests at elevations between 1,500 and 3,000 meters. It feeds on insects, berries, small vertebrates, and eggs.

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Related Comparisons

Common Raven vs American Crow

same-family

Keel-billed Toucan vs American Crow

look-alike

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