Snowy Egret vs Great Blue Heron
Egretta thula 比較対象 Ardea herodias
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 | — | — |
Size Comparison
Habitat Comparison
Great Blue Heron
Wetlands of all types including marshes, swamps, riverbanks, lake edges, and coastal shores. Also hunts in fields and meadows.
Song & Call Comparison
Snowy Egret
Great Blue Heron
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.
Geographic Range & Migration
Snowy Egret
Great Blue Heron
North and Central America from Alaska and southern Canada to the Caribbean and Galapagos Islands.
保全状況
Snowy Egret
Great Blue Heron
How to Tell Them Apart
Snowy Egret
Great Blue Heron
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.
Long, dagger-like yellowish bill
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.