Sage Grouse vs Altai Snowcock
Centrocercus urophasianus 비교 대상 Tetraogallus altaicus
Side-by-Side Comparison
| 속성 | Sage Grouse | Altai Snowcock |
|---|---|---|
| 학명 | Centrocercus urophasianus | Tetraogallus altaicus |
| 목 | Galliformes | Galliformes |
| 과 | Phasianidae | Phasianidae |
| 보전 상태 | Near Threatened | Least Concern |
| 체장 | — | — |
| 날개 폭 | 61.2 cm (24.1 in) | 56.9 cm (22.4 in) |
| 체중 | 2100.0 g (74.08 oz) | 2770.0 g (97.71 oz) |
| 식성 | 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 … |
| 산란 수 | 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.
보전 상태
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
북미 최대 뇌조(약 2.1 kg)로 수컷은 구애 과시 중 노란 공기주머니를 부풀리는 뾰족한 꼬리를 가진다. 미국 서부와 캐나다의 쑥(Artemisia) 생태계에 먹이와 번식 모두 전적으로 의존한다. 주로 쑥 잎을 먹는다. 준위협종으로 쑥 서식지 광범위한 전환으로 개체수가 크게 감소했다.
Altai Snowcock
알타이 눈꿩은 알타이-사얀 산맥의 고산 지대에 서식하는 대형 자고새류입니다. 회색빛 갈색 깃털에 흰색 무늬가 있으며, 4,000m 이상의 험준한 고산 초원과 암석 지대에 적응하여 생활합니다.