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Side-by-Side Comparison

属性	Snowy Egret	Great Blue Heron
学名	Egretta thula	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	50.6 cm (19.9 in)	183.0 cm (72.0 in)
体重	370.0 g (13.05 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	2-6	2-7
Population Trend	—	—

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Size Comparison

Body Length

Snowy Egret —

Great Blue Heron 117.0 cm

翼開長

Snowy Egret 50.6 cm

Great Blue Heron 183.0 cm

体重

Snowy Egret 370.0 g

Great Blue Heron 2400.0 g

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Habitat Comparison

共通生息地

🌿 Wetland 🌾 Grassland

Snowy Egret only

🏖️ Coastal

Great Blue Heron only

None

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

Snowy Egret

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

Snowy Egret

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

Snowy Egret

Least Concern

Great Blue Heron

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How to Tell Them Apart

Snowy Egret

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

Snowy Egret

北米・中南米の湿地、沿岸に生息する小型のシラサギ（体長52〜65cm）。純白の羽毛と黒い嘴・脚に黄色い足が特徴。Egretta thula（ユキコサギ）は浅い水域で素早い動きで魚を捕まえる。19世紀末に飾り羽目的で乱獲され激減したが、保護活動により回復した。現在も世界各地の湿地で普通に見られる。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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