Sooty Grouse vs Altai Snowcock
Dendragapus fuliginosus в сравнении с Tetraogallus altaicus
Side-by-Side Comparison
| Характеристика | Sooty Grouse | Altai Snowcock |
|---|---|---|
| Научное название | Dendragapus fuliginosus | Tetraogallus altaicus |
| Отряд | Galliformes | Galliformes |
| Семейство | Phasianidae | Phasianidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | — | — |
| Размах крыльев | 44,6 cm (17.6 in) | 56,9 cm (22.4 in) |
| Масса | 1016,25 g (35.85 oz) | 2770,0 g (97.71 oz) |
| Питание | Feeds on conifer needles, especially Douglas-fir, in winter; berries, leaves, seeds, and insects in summer. | Feeds on alpine grasses, seeds, berries, and shoots; digs for roots and bulbs in Altai … |
| Размер кладки | 6-12 | 4-15 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Sooty Grouse
Deep, booming 'hoot-hoot-hoot-hoot-hoot' from treetop perch; inflated cervical sacs amplify resonance. Similar to Dusky Grouse but with subtle tonal differences. Alarm is rapid sharp clucking.
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
Sooty Grouse
Resident along the Pacific coast and Cascade-Sierra ranges from Alaska south to northern California. Found in coastal coniferous forest.
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.
Охранный статус
Sooty Grouse
Altai Snowcock
How to Tell Them Apart
Sooty Grouse
Male is dark sooty-grey; tail grey with broad pale grey terminal band; yellow eye-comb; bare pink-purple neck sac visible during display. Female mottled dark brown; overall darker than Dusky Grouse.
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
Sooty Grouse
A large grouse (~1 kg) of family Phasianidae, males uniformly dark sooty-grey with yellow-orange eyecomb. Inhabits coastal and Pacific mountain forests from Alaska to California. Feeds on conifer needles, especially fir and hemlock, in winter; berries and invertebrates in summer. Migrates upslope in winter, opposite to most birds. Least Concern; common along the Pacific Coast mountain ranges.
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.