White-tailed Ptarmigan vs Altai Snowcock
Lagopus leucura 比較対象 Tetraogallus altaicus
Side-by-Side Comparison
| 属性 | White-tailed Ptarmigan | Altai Snowcock |
|---|---|---|
| 学名 | Lagopus leucura | Tetraogallus altaicus |
| 目 | Galliformes | Galliformes |
| 科 | Phasianidae | Phasianidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 34.6 cm (13.6 in) | 56.9 cm (22.4 in) |
| 体重 | 361.8 g (12.76 oz) | 2770.0 g (97.71 oz) |
| 食性 | Eats alpine willow and heather buds and leaves; switches to berries and insects in summer. … | Feeds on alpine grasses, seeds, berries, and shoots; digs for roots and bulbs in Altai … |
| 一腹卵数 | 2-9 | 4-15 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
White-tailed Ptarmigan
Soft, chicken-like clucking 'ko-ko-ko'; quiet relative to other ptarmigan. Alarm is a sharp 'kek' series. Males give low, croaking calls on alpine tundra at dawn. Flock contact is muted burbling.
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
White-tailed Ptarmigan
Breeds in alpine tundra from Alaska south through the Rockies to New Mexico. Largely resident, descending to lower elevations in winter.
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
White-tailed Ptarmigan
Altai Snowcock
How to Tell Them Apart
White-tailed Ptarmigan
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
White-tailed Ptarmigan
The smallest ptarmigan (~360 g) of family Phasianidae; the only ptarmigan with a white tail year-round. Inhabits alpine tundra and rocky slopes above treeline in the Rocky Mountains from Alaska to New Mexico. Plumage turns all-white in winter for camouflage. Feeds on willows, sedges, and berries. Least Concern; well adapted to extreme mountain environments but vulnerable to climate warming.
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。