Sooty Grouse vs Ahanta Spurfowl
Dendragapus fuliginosus 比較対象 Pternistis ahantensis
Side-by-Side Comparison
| 属性 | Sooty Grouse | Ahanta Spurfowl |
|---|---|---|
| 学名 | Dendragapus fuliginosus | Pternistis ahantensis |
| 目 | Galliformes | Galliformes |
| 科 | Phasianidae | Phasianidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 44.6 cm (17.6 in) | 34.6 cm (13.6 in) |
| 体重 | 1016.25 g (35.85 oz) | 547.5 g (19.31 oz) |
| 食性 | Feeds on conifer needles, especially Douglas-fir, in winter; berries, leaves, seeds, and insects in summer. | Feeds on seeds, invertebrates, and plant matter in West African lowland forest and thicket. |
| 一腹卵数 | 6-12 | 3-12 |
| 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.
Ahanta Spurfowl
Loud, staccato 'krak-krak-KRAAK' from W African forest edge; slightly higher than larger spurfowl. Alarm is rapid explosive cackling. Pairs call in loose synchrony at dawn in secondary growth.
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.
Ahanta Spurfowl
Resident of dense lowland and coastal forest in West Africa from Ghana to Cameroon; also found in Bioko Island.
保全状況
Sooty Grouse
Ahanta Spurfowl
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.
Ahanta Spurfowl
Dark brown above with pale buff shaft streaks; whitish below with dark brown streaking; red bill; red orbital skin; yellow legs. Sexes similar; closely resembles Double-spurred Spurfowl; West African forests.
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.
Ahanta Spurfowl
A medium Phasianidae spurfowl (~548 g) of lowland and secondary forest edges in West Africa from Ivory Coast to Nigeria. Dark brown streaked white; red orbital skin. Forages on the ground in pairs or small groups for seeds, berries, and invertebrates. Tolerates forest fragments; Least Concern.