Sunda Frogmouth vs Sumatran Frogmouth
Batrachostomus cornutus 比較対象 Batrachostomus poliolophus
Side-by-Side Comparison
| 属性 | Sunda Frogmouth | Sumatran Frogmouth |
|---|---|---|
| 学名 | Batrachostomus cornutus | Batrachostomus poliolophus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Podargidae | Podargidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 26.7 cm (10.5 in) | 24.1 cm (9.5 in) |
| 体重 | 46.3 g (1.63 oz) | 46.3 g (1.63 oz) |
| 食性 | Nocturnal forager on large insects and small lizards; sallies from perches to ground in dense … | Night hunter detecting prey by sound; takes large beetles, frogs, and lizards in swift pouncing … |
| 一腹卵数 | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Sunda Frogmouth
Soft 'koo-koo' or melodic hooting; moderate pitch; calls from Sundaic lowland forest at night; pairs duet with answering calls; alarm a sharp hiss; ventriloquial quality
Sumatran Frogmouth
High melodic whistle; 'kee-wii' repeated softly at night; Sumatran highland forest endemic; rarely recorded; higher-pitched than lowland frogmouths; pairs call together
Geographic Range & Migration
Sunda Frogmouth
Found on Borneo, Sumatra, and adjacent small islands in lowland and hill rainforest below 1,000 m. Uncommon primary forest resident.
Sumatran Frogmouth
Endemic to the highlands of Sumatra at 800–2,000 m. Found in submontane and montane rainforest. Rare and seldom recorded.
保全状況
Sunda Frogmouth
Sumatran Frogmouth
How to Tell Them Apart
Sunda Frogmouth
Males brown-grey finely stippled with black and bearing white scapular spots; small white feather tufts above eye form horn-like projections; females rufous-chestnut with white spots; Sundaic species uniquely decorated with …
Sumatran Frogmouth
Males grey with fine black stippling and white scapular row; pale grey crown slightly paler than back; females rufous-cinnamon with white-spotted coverts; Sumatran endemic with noticeably pale grey crown distinguishing …
About These Birds
Sunda Frogmouth
ボルネオ・スマトラ・ジャワの低地熱帯雨林に生息する中型のガマグチヨタカ（23〜28cm）。小さな耳房飾りを持つ暗褐色の羽毛。林内の夜行性昆虫食者。目の上の角のような羽房飾りで他のアジアのガマグチヨタカと識別できる。
Sumatran Frogmouth
インドネシア、スマトラの標高900m以上の山地林固有の中型のガマグチヨタカ（23〜26cm）。細かい白みがかった模様を持つ赤褐色の羽毛。密な下生えの夜行性昆虫食者。知見が乏しく；森林喪失により準絶滅危惧に分類。