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Side-by-Side Comparison

属性	Boat-billed Heron	Great Blue Heron
学名	Cochlearius cochlearius	Ardea herodias
目	Pelecaniformes	Pelecaniformes
科	Ardeidae	Ardeidae
保全状況	Least Concern	Least Concern
体長	—	117.0 cm (46.1 in)
翼開長	52.9 cm (20.8 in)	183.0 cm (72.0 in)
体重	644.0 g (22.72 oz)	2400.0 g (84.66 oz)
食性	--	Primarily fish, also frogs, snakes, small mammals, insects, and other birds. Hunts by standing motionless …
一腹卵数	1-4	2-7
Population Trend	—	—

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Size Comparison

Body Length

Boat-billed Heron —

Great Blue Heron 117.0 cm

翼開長

Boat-billed Heron 52.9 cm

Great Blue Heron 183.0 cm

体重

Boat-billed Heron 644.0 g

Great Blue Heron 2400.0 g

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Habitat Comparison

共通生息地

🌿 Wetland

Boat-billed Heron only

🌲 Forest 🏖️ Coastal

Great Blue Heron only

🌾 Grassland

Great Blue Heron

Wetlands of all types including marshes, swamps, riverbanks, lake edges, and coastal shores. Also hunts in fields and meadows.

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Song & Call Comparison

Boat-billed Heron

Great Blue Heron

さえずり

Deep, harsh, croaking 'frahnk-frahnk' call in flight. Also gives low guttural grunts at the nest. Alarmed birds give repeated croaks. Mostly silent for such a large wader.

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Geographic Range & Migration

Boat-billed Heron

Great Blue Heron

North and Central America from Alaska and southern Canada to the Caribbean and Galapagos Islands.

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保全状況

Least Concern

Boat-billed Heron

Least Concern

Great Blue Heron

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How to Tell Them Apart

Boat-billed Heron

Great Blue Heron

羽毛

Blue-grey body with a white head bearing a broad black stripe extending to a long black plume. Rufous-brown thighs. In flight, the neck is folded into an S-shape.

くちばし

Long, dagger-like yellowish bill

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About These Birds

Boat-billed Heron

メキシコから南アメリカにかけての熱帯の河川・湿地に生息する夜行性のサギ（体長46〜52cm）。特大の扁平な嘴と大きな赤い目が特徴的で、「ボートビルドヘロン」とも呼ばれる。Cochlearius cochlearius（ハシビロサギ）は夜間に扁平な嘴で水面をすくうように魚を捕まえる独特の採食方法を持つ。Ardeidae科。

Great Blue Heron

The great blue heron is the largest heron in North America, standing up to 1.4 meters tall. These patient hunters can stand motionless for extended periods before striking at prey with remarkable speed. They nest in large colonies called heronries, often returning to the same site year after year.

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