Ahanta Spurfowl vs Western Capercaillie
Pternistis ahantensis 比較対象 Tetrao urogallus
Side-by-Side Comparison
| 属性 | Ahanta Spurfowl | Western Capercaillie |
|---|---|---|
| 学名 | Pternistis ahantensis | Tetrao urogallus |
| 目 | Galliformes | Galliformes |
| 科 | Phasianidae | Phasianidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 34.6 cm (13.6 in) | 69.5 cm (27.4 in) |
| 体重 | 547.5 g (19.31 oz) | 3072.5 g (108.38 oz) |
| 食性 | Feeds on seeds, invertebrates, and plant matter in West African lowland forest and thicket. | Relies on pine and other conifer needles in winter; forages for berries, shoots, herbs, and … |
| 一腹卵数 | 3-12 | 4-12 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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.
Western Capercaillie
Extraordinary lek song: four phases — ticking, popping, cork-pulling, then grinding 'shhhhh'; lasts 6–8 seconds. Largest grouse song; audible 500+ m in European forest. Alarm is a loud bark.
Geographic Range & Migration
Ahanta Spurfowl
Resident of dense lowland and coastal forest in West Africa from Ghana to Cameroon; also found in Bioko Island.
Western Capercaillie
Resident of mature coniferous and mixed forests from Scotland and Scandinavia east through Russia to Siberia; relict populations in central Europe.
保全状況
Ahanta Spurfowl
Western Capercaillie
How to Tell Them Apart
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.
Western Capercaillie
Strongly dimorphic. Male dark slate-blue with iridescent bottle-green gorget, brown wings, and red wattle over eye; fan-shaped tail. Female cryptically barred ochre, russet, and black with orange breast patch.
About These Birds
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.
Western Capercaillie
北ヨーロッパ・アジアの成熟した針葉樹林に生息するキジ科最大の鳥（体長60〜87cm）。雄は黒い体に赤い眉の皮膚、扇形の尾、白い翼下部が特徴的。Tetrao urogallus（オオライチョウ）の雄の求愛ダンスは独特で、翼を広げて特徴的な音楽的鳴き声を出しながら踊る。生息地の森林減少で多くの地域で個体数が激減。Phasianidae科。