Sage Grouse vs Altai Snowcock
Centrocercus urophasianus 比較対象 Tetraogallus altaicus
Side-by-Side Comparison
| 属性 | Sage Grouse | Altai Snowcock |
|---|---|---|
| 学名 | Centrocercus urophasianus | Tetraogallus altaicus |
| 目 | Galliformes | Galliformes |
| 科 | Phasianidae | Phasianidae |
| 保全状況 | Near Threatened | Least Concern |
| 体長 | — | — |
| 翼開長 | 61.2 cm (24.1 in) | 56.9 cm (22.4 in) |
| 体重 | 2100.0 g (74.08 oz) | 2770.0 g (97.71 oz) |
| 食性 | Feeds almost entirely on sagebrush leaves and buds in winter; insects and forbs important in … | Feeds on alpine grasses, seeds, berries, and shoots; digs for roots and bulbs in Altai … |
| 一腹卵数 | 7-15 | 4-15 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Sage Grouse
Males produce extraordinary lek display: deep swishing 'swish-swish-coo-OO-ploop' using air sacs; low frequency, liquid, and otherworldly. Alarm is a cackling 'cac-cac'; females cluck softly.
Altai Snowcock
Loud, ringing whistled 'whi-WHEEE' echoing across Altai alpine slopes; deeper than Tibetan Snowcock due to larger size. Alarm is rapid barking. Calls at dawn from rocky ridgelines.
Geographic Range & Migration
Sage Grouse
Resident in sagebrush habitat of the western United States and southwestern Canada. Found in semi-arid plains with Artemisia. Vulnerable.
Altai Snowcock
Resident of alpine rocky slopes and grassy hillsides in the Altai and Sayan mountains of Russia, Kazakhstan, and western Mongolia, at 2,000–4,000 m.
保全状況
Sage Grouse
Altai Snowcock
How to Tell Them Apart
Sage Grouse
Male has black belly, white breast, spiky pointed tail; yellow eye-combs; during display inflates yellow-green bare breast sacs exposing white feather ruff. Female mottled brown with dark belly patch.
Altai Snowcock
Largest snowcock; grey-brown upperparts with buff streaks; white underparts with grey breast; rufous necklace streaks on lower neck; white outer tail in flight; whitish face with dark ear patch. Sexes …
About These Birds
Sage Grouse
体重約2.1kgの北米最大のライチョウ。棘状の尾羽と黄色の気嚢を持ち、セージブラッシュに依存する準絶滅危惧種。
Altai Snowcock
アルタイセッケイはアルタイ山脈の高山地帯に生息する大型のキジ科の鳥です。険しい岩場の斜面を好み、植物の種子や葉を食べます。