Bornean Frogmouth vs Gould's Frogmouth
Batrachostomus mixtus 比較対象 Batrachostomus stellatus
Side-by-Side Comparison
| 属性 | Bornean Frogmouth | Gould's Frogmouth |
|---|---|---|
| 学名 | Batrachostomus mixtus | Batrachostomus stellatus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Podargidae | Podargidae |
| 保全状況 | Least Concern | Near Threatened |
| 体長 | — | — |
| 翼開長 | 23.6 cm (9.3 in) | 23.7 cm (9.3 in) |
| 体重 | 46.3 g (1.63 oz) | 52.05 g (1.84 oz) |
| 食性 | Nocturnal perch-and-pounce predator feeding on large invertebrates, small frogs, and lizards on the forest floor. | Strictly nocturnal forager; catches large beetles, cockroaches, and centipedes by dropping silently to the forest … |
| 一腹卵数 | -- | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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
Gould's Frogmouth
High, melodic 'kee-kee-kee' whistle; thin and reedy for frogmouth; calls from Bornean lowland forest; higher-pitched than other frogmouths; rarely observed or recorded
Geographic Range & Migration
Bornean Frogmouth
Endemic to the highlands of Borneo at 900–2,400 m. Found in montane forest on Mount Kinabalu and adjacent ranges. Rare.
Gould's Frogmouth
Found in the Thai-Malay Peninsula, Sumatra, and Borneo in lowland dipterocarp and peat swamp forest below 600 m. Uncommon.
保全状況
Bornean Frogmouth
Gould's Frogmouth
How to Tell Them Apart
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.
Gould's Frogmouth
Males pale grey-brown finely marked with dark vermiculations and starring white scapular spots; females rich cinnamon-rufous with white spotting; small Sundaland frogmouth with disproportionately bold scapular spots for its size.
About These Birds
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。
Gould's Frogmouth
マレー半島・スマトラ・ボルネオの低地原生熱帯雨林に生息する中型のガマグチヨタカ（21〜25cm）。星を思わせる白い斑点で飾られた豊かな褐色の羽毛。夜行性の昆虫食者。低地の継続的な森林破壊により準絶滅危惧に分類。