Rock Ptarmigan vs Altai Snowcock
Lagopus muta 比較対象 Tetraogallus altaicus
Side-by-Side Comparison
| 属性 | Rock Ptarmigan | Altai Snowcock |
|---|---|---|
| 学名 | Lagopus muta | Tetraogallus altaicus |
| 目 | Galliformes | Galliformes |
| 科 | Phasianidae | Phasianidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 37.7 cm (14.8 in) | 56.9 cm (22.4 in) |
| 体重 | 608.5 g (21.46 oz) | 2770.0 g (97.71 oz) |
| 食性 | Eats alpine plants, buds, berries, seeds, and lichen; shifts to willow/birch buds in winter when … | Feeds on alpine grasses, seeds, berries, and shoots; digs for roots and bulbs in Altai … |
| 一腹卵数 | 3-11 | 4-15 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Rock Ptarmigan
Males produce a belching, rattling 'er-err-errr-karr' from rocky alpine terrain; deep, guttural, and frog-like. Alarm is sharp 'kek-kek'. Contact calls low and rolling; female clucks 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
Rock Ptarmigan
Circumpolar resident of Arctic and alpine tundra across North America, Europe, and Asia. Resident or short-distance altitudinal migrant.
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
Rock Ptarmigan
Altai Snowcock
How to Tell Them Apart
Rock Ptarmigan
Seasonally dimorphic: brilliant snow-white in winter with black loral stripe in males; mottled grey-brown and buff in summer with intricate dark vermiculations; females lack black loral mark.
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
Rock Ptarmigan
A medium-sized grouse of the order Galliformes inhabiting arctic and alpine tundra across the Holarctic. Weighing ~609 g, it undergoes three annual moults, turning white in winter for camouflage. Feeds on buds, leaves, and berries. Least Concern.
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。