Ruffed Grouse vs Ferruginous Partridge
Bonasa umbellus 比較対象 Caloperdix oculeus
Side-by-Side Comparison
| 属性 | Ruffed Grouse | Ferruginous Partridge |
|---|---|---|
| 学名 | Bonasa umbellus | Caloperdix oculeus |
| 目 | Galliformes | Galliformes |
| 科 | Phasianidae | Phasianidae |
| 保全状況 | Least Concern | Near Threatened |
| 体長 | — | — |
| 翼開長 | 36.6 cm (14.4 in) | 28.3 cm (11.1 in) |
| 体重 | 613.0 g (21.62 oz) | 210.5 g (7.43 oz) |
| 食性 | Buds, catkins, and leaves of deciduous trees dominate diet in winter; berries, seeds, and invertebrates … | Eats seeds, invertebrates, and small fruits on floor of Southeast Asian lowland and hill forests. … |
| 一腹卵数 | 6-15 | 8-10 |
| 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.
Ferruginous Partridge
Sharp, staccato 'krik-krik-krik' calls from lowland rainforest; often given in duet. Alarm is a loud, rapid chattering rattle; contact notes between pairs soft and clucking.
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.
Ferruginous Partridge
Resident in lowland rainforest of the Thai-Malay Peninsula, Sumatra, and Borneo. Found in flat or gently sloping lowland forest.
保全状況
Ruffed Grouse
Ferruginous 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 …
Ferruginous Partridge
Rich ferruginous (deep rusty-orange) overall; upperparts black-and-rufous barred; flanks black boldly spotted white; bare red facial skin; underparts rufous-orange; one of the most vividly coloured Southeast Asian partridges.
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。
Ferruginous Partridge
体重約210gの錆赤色・黒白の斑点を持つヤマウズラ。マレーシア・スマトラ・ボルネオに生息する準絶滅危惧種。