Altai Snowcock vs Udzungwa Forest-partridge
Tetraogallus altaicus comparado com Xenoperdix udzungwensis
Side-by-Side Comparison
| Atributo | Altai Snowcock | Udzungwa Forest-partridge |
|---|---|---|
| Nome científico | Tetraogallus altaicus | Xenoperdix udzungwensis |
| Ordem | Galliformes | Galliformes |
| Família | Phasianidae | Phasianidae |
| Estado de conservação | Least Concern | Endangered |
| Comprimento | — | — |
| Envergadura | 56,9 cm (22.4 in) | 28,8 cm (11.3 in) |
| Peso | 2770,0 g (97.71 oz) | 207,25 g (7.31 oz) |
| Dieta | Feeds on alpine grasses, seeds, berries, and shoots; digs for roots and bulbs in Altai … | Forages on floor of Udzungwa Tanzanian montane forest for seeds, invertebrates, and small fruits. Critically … |
| Tamanho da postura | 4-15 | 3 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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.
Udzungwa Forest-partridge
Loud, clear whistled 'wheee-oo' calls from montane forest floor; haunting and infrequently heard. Alarm is a sharp explosive 'kek'; poorly known due to rarity in Udzungwa Mountains.
Geographic Range & Migration
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.
Udzungwa Forest-partridge
Endemic to the Udzungwa Mountains of Tanzania. Found in montane forest at 1,000-2,000 m. Very poorly known; only two specimens collected.
Estado de conservação
Altai Snowcock
Udzungwa Forest-partridge
How to Tell Them Apart
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 …
Udzungwa Forest-partridge
Brown above with fine black streaking and white shaft-streaks; red legs and bill; underparts paler buff-brown with dark-edged feathers creating scaled pattern; bare red facial skin around eye.
About These Birds
Altai Snowcock
The largest snowcock (~2.77 kg), family Phasianidae, of alpine scree and subalpine meadows in the Altai and Tian Shan ranges of Central Asia. Heavily built, grey and white with rusty-brown markings. Feeds on roots, bulbs, and alpine plants. Forms small flocks outside breeding season. Least Concern.
Udzungwa Forest-partridge
A small partridge (~205 g) of family Phasianidae, with brown-streaked plumage and red legs. Endemic to the Eastern Arc Mountains of Tanzania, restricted to Udzungwa and Rubeho mountain forests above 1,300 m. Forages on the forest floor for seeds and invertebrates. Endangered; one of Africa's rarest birds, confined to a tiny forest area threatened by agricultural encroachment and logging.