Ahanta Spurfowl vs Swierstra's Spurfowl
Pternistis ahantensis 比較対象 Pternistis swierstrai
Side-by-Side Comparison
| 属性 | Ahanta Spurfowl | Swierstra's Spurfowl |
|---|---|---|
| 学名 | Pternistis ahantensis | Pternistis swierstrai |
| 目 | Galliformes | Galliformes |
| 科 | Phasianidae | Phasianidae |
| 保全状況 | Least Concern | Vulnerable |
| 体長 | — | — |
| 翼開長 | 34.6 cm (13.6 in) | 35.8 cm (14.1 in) |
| 体重 | 547.5 g (19.31 oz) | 470.0 g (16.58 oz) |
| 食性 | Feeds on seeds, invertebrates, and plant matter in West African lowland forest and thicket. | Omnivorous; eats seeds, invertebrates, and plant material in Angolan Afromontane forest and grassland. |
| 一腹卵数 | 3-12 | -- |
| 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.
Swierstra's Spurfowl
Loud, emphatic 'krak-KRAK' calls from Angolan montane forest; medium-sized spurfowl with slightly nasal quality. Alarm is rapid cackling cackle. Pairs call in duet at dawn from forest understorey.
Geographic Range & Migration
Ahanta Spurfowl
Resident of dense lowland and coastal forest in West Africa from Ghana to Cameroon; also found in Bioko Island.
Swierstra's Spurfowl
Endemic to the highlands of central Angola (Huambo and Bié Plateaus); resident of montane grassland and open miombo woodland above 1,500 m.
保全状況
Ahanta Spurfowl
Swierstra's Spurfowl
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.
Swierstra's Spurfowl
Brown above with pale buff streaks; white underparts with dark brown streaking; red bill; red legs; bare red skin around eye. Sexes similar; restricted to highlands of central Angola; rare …
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.
Swierstra's Spurfowl
A medium Phasianidae spurfowl (~470 g) restricted to montane forest and forest edge in the highlands of central Angola. Little known; detected mainly by vocalisations. Feeds on seeds, fruits, and invertebrates. Vulnerable from ongoing deforestation in Angolan highlands and limited range of under-surveyed montane forests.