Sunda Frogmouth vs Bornean Frogmouth
Batrachostomus cornutus 比較対象 Batrachostomus mixtus
Side-by-Side Comparison
| 属性 | Sunda Frogmouth | Bornean Frogmouth |
|---|---|---|
| 学名 | Batrachostomus cornutus | Batrachostomus mixtus |
| 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) | 23.6 cm (9.3 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 … | Nocturnal perch-and-pounce predator feeding on large invertebrates, small frogs, and lizards on the forest floor. |
| 一腹卵数 | 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
Bornean Frogmouth
Soft melodic hooting; 'too-too' whistle from Bornean hill forest; gentle and ventriloquial; calls at night from dense undergrowth; alarm a soft hissing exhalation
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.
Bornean Frogmouth
Endemic to the highlands of Borneo at 900–2,400 m. Found in montane forest on Mount Kinabalu and adjacent ranges. Rare.
保全状況
Sunda Frogmouth
Bornean 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 …
Bornean Frogmouth
Males grey-brown finely vermiculated dark; white scapular spots; females rufous-chestnut with white-buff spotting; small Borneo endemic closely resembling Sumatran Frogmouth but greyer with less contrast between crown and back.
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。
Bornean Frogmouth
ボルネオの山地固有の中型のガマグチヨタカ（23〜25cm）。暗褐色の羽毛を持つ。山地苔むした林の夜行性昆虫食者。ホースフィールドガマグチヨタカから最近分離独立。生態データが限られており、標高600m以上に限定される。