Large Frogmouth vs Dulit Frogmouth
Batrachostomus auritus 比較対象 Batrachostomus harterti
Side-by-Side Comparison
| 属性 | Large Frogmouth | Dulit Frogmouth |
|---|---|---|
| 学名 | Batrachostomus auritus | Batrachostomus harterti |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Podargidae | Podargidae |
| 保全状況 | Vulnerable | Least Concern |
| 体長 | — | — |
| 翼開長 | 52.1 cm (20.5 in) | 48.4 cm (19.1 in) |
| 体重 | 206.0 g (7.27 oz) | 206.0 g (7.27 oz) |
| 食性 | Crepuscular and nocturnal; hunts large insects, spiders, and small vertebrates by dropping from perches to … | Nocturnal carnivore feeding on large beetles, worms, and small lizards; also takes moths in low … |
| 一腹卵数 | 1 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Large Frogmouth
Deep, resonant 'whooo' or mellow hooting; one of Asia's largest frogmouths; calls from Bornean lowland forest at night; soft ventriloquial quality; alarm a hiss
Dulit Frogmouth
Soft hooting whistle; mellow repeated 'hoo-hoo'; calls from Bornean montane forest; similar to Large Frogmouth but higher-pitched; rarely recorded; call easily missed
Geographic Range & Migration
Large Frogmouth
Found in the Thai-Malay Peninsula and Borneo in lowland and hill dipterocarp forest. Restricted to primary forest below 1,000 m. Scarce.
Dulit Frogmouth
Endemic to the highlands of Borneo at 900–2,500 m. Found in montane forest on Gunung Dulit and other ranges in Sarawak and Sabah. Rare.
保全状況
Large Frogmouth
Dulit Frogmouth
How to Tell Them Apart
Large Frogmouth
Large Bornean frogmouth; males grey-brown with fine black vermiculations and white scapular spots; females rich chestnut-brown with white-spotted wing coverts; yellow eyes; prominent rictal bristles; largest of the Batrachostomus frogmouths.
Dulit Frogmouth
Males dark grey with black vermiculations and white-spotted scapulars; females deep rufous-chestnut with white-spotted coverts; Borneo montane endemic; strongly dimorphic with male grey and female rufous patterns contrasting sharply.
About These Birds
Large Frogmouth
ボルネオとマレー半島の低地熱帯雨林に生息する大型のガマグチヨタカ（38〜42cm）。白い耳房飾りを持つ豊かな褐色の羽毛。巨大な口裂を持つ夜行性の昆虫食者。アジア最大のガマグチヨタカで、大型昆虫と小型脊椎動物を食べる。
Dulit Frogmouth
ボルネオ北部の山地林固有の中型のガマグチヨタカ（25〜27cm）。暗褐色の羽毛を持つ。夜行性の昆虫食者。最も希少で知られていないガマグチヨタカのひとつで、ごく少数の標本しか知られていない。生態と行動の情報が限られている。