Tan-breasted Partridge vs Altai Snowcock
Arborophila rolli 比較対象 Tetraogallus altaicus
Side-by-Side Comparison
| 属性 | Tan-breasted Partridge | Altai Snowcock |
|---|---|---|
| 学名 | Arborophila rolli | Tetraogallus altaicus |
| 目 | Galliformes | Galliformes |
| 科 | Phasianidae | Phasianidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 28.1 cm (11.1 in) | 56.9 cm (22.4 in) |
| 体重 | 336.0 g (11.85 oz) | 2770.0 g (97.71 oz) |
| 食性 | Forages on floor of northern Sumatran montane forests for seeds, invertebrates, and small fruits. Little-studied … | Feeds on alpine grasses, seeds, berries, and shoots; digs for roots and bulbs in Altai … |
| 一腹卵数 | -- | 4-15 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Tan-breasted Partridge
Clear, ringing 'wii-OO' whistle heard from Sumatra's foothills; second note drawn out. Poorly known; alarm a short sharp 'kek'. Covey contact maintained by soft, quiet clucks.
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
Tan-breasted Partridge
Endemic to northern Sumatra in Aceh and North Sumatra provinces. Found in lowland and foothill forest below 1,000 m.
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
Tan-breasted Partridge
Altai Snowcock
How to Tell Them Apart
Tan-breasted Partridge
Brown above; breast uniform tan-buff without chestnut or grey; throat whitish; flanks olive-brown streaked pale; bare reddish eye-ring; uniform tan breast is diagnostic against grey-breasted congeners.
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
Tan-breasted Partridge
A medium-sized partridge (~335 g) of family Phasianidae, with plain tan-brown breast and muted brown upperparts. Endemic to the Natuna Islands of Indonesia. Inhabits tropical forest. Forages on the forest floor for seeds and invertebrates. Least Concern; while restricted to small islands, remains stable; its insular endemism makes it vulnerable to future habitat clearance or introduced predators.
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。