Ruffed Grouse vs Crested Partridge
Bonasa umbellus 比較対象 Rollulus rouloul
Side-by-Side Comparison
| 属性 | Ruffed Grouse | Crested Partridge |
|---|---|---|
| 学名 | Bonasa umbellus | Rollulus rouloul |
| 目 | Galliformes | Galliformes |
| 科 | Phasianidae | Phasianidae |
| 保全状況 | Least Concern | Vulnerable |
| 体長 | — | — |
| 翼開長 | 36.6 cm (14.4 in) | 27.2 cm (10.7 in) |
| 体重 | 613.0 g (21.62 oz) | 250.5 g (8.84 oz) |
| 食性 | Buds, catkins, and leaves of deciduous trees dominate diet in winter; berries, seeds, and invertebrates … | Forages on floor of Southeast Asian lowland rainforests for seeds, fallen fruits, and invertebrates. Scratches … |
| 一腹卵数 | 6-15 | 4-6 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Ruffed Grouse
Males produce deep, accelerating drumming with wings on hollow logs; thump-thump-thump-rrrrrr. Vocal calls include soft 'quit-quit'; alarm is a sharp 'pit'. Drumming carries up to 400 meters.
Crested Partridge
High-pitched, thin whistled 'seee' repeated persistently; metallic and insect-like. Males call from forest floor, rarely seen. Alarm is an explosive low grunt followed by rapid wing beats.
Geographic Range & Migration
Ruffed Grouse
Resident across boreal forests of North America from Alaska south to the Appalachians. Found in deciduous and mixed woodland. Largely sedentary.
Crested Partridge
Resident in lowland and foothill rainforest of Myanmar, Thailand, Malaysia, Sumatra, and Borneo. Found below 1,500 m.
保全状況
Ruffed Grouse
Crested Partridge
How to Tell Them Apart
Ruffed Grouse
Cryptic brown or grey morph; broad black ruff on neck sides; tail broadly banded grey with black subterminal bar; underparts barred buff and brown; red eye-comb; two colour morphs vary …
Crested Partridge
Male is dark glossy green-black with vivid red-crimson erectile crest; red orbital skin; chestnut wings. Female is entirely bright emerald green with brown wings, red legs, and grey head; among …
About These Birds
Ruffed Grouse
エリマキライチョウはキジ科の中型ライチョウ（約610g）で、扇形の尾と頸の襞飾りを持つ褐色・灰色の見事な保護色を持つ。北米の落葉樹林と混交林に生息する。雄は翼で叩くことで独特の太鼓のような音を出す。芽・葉・ベリーを食べる。軽度懸念；北米の広域にわたる林に生息する重要な狩猟鳥。
Crested Partridge
A small partridge (~250 g) of family Phasianidae, males with vivid crimson crest and iridescent green plumage. Found in lowland tropical rainforests of Southeast Asia including Thailand, Malaysia, Sumatra, and Borneo. Forages on the forest floor for fallen seeds, fruits, and invertebrates. Vulnerable; dependent on primary lowland forest, heavily impacted by deforestation and palm oil expansion.