Dulit Frogmouth vs Horsfield's Frogmouth
Batrachostomus harterti 比較対象 Batrachostomus javensis
Side-by-Side Comparison
| 属性 | Dulit Frogmouth | Horsfield's Frogmouth |
|---|---|---|
| 学名 | Batrachostomus harterti | Batrachostomus javensis |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Podargidae | Podargidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | — | — |
| 翼開長 | 48.4 cm (19.1 in) | 22.2 cm (8.7 in) |
| 体重 | 206.0 g (7.27 oz) | 46.333333333333336 g (1.63 oz) |
| 食性 | Nocturnal carnivore feeding on large beetles, worms, and small lizards; also takes moths in low … | Feeds nocturnally on large beetles, millipedes, and worms; occasionally takes small lizards by ground-pouncing. |
| 一腹卵数 | -- | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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
Horsfield's Frogmouth
Melodic 'choo-choo-choo' or plaintive whistle; repeated soft notes; calls from Javan and Philippine forest at night; pitch moderate; pairs often answer each other
Geographic Range & Migration
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.
Horsfield's Frogmouth
Found from the Thai-Malay Peninsula through Sumatra, Java, and Borneo to the Philippines. Resident in lowland and hill forest below 1,000 m.
保全状況
Dulit Frogmouth
Horsfield's Frogmouth
How to Tell Them Apart
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.
Horsfield's Frogmouth
Males grey-brown with black freckling and white scapular spots; females warm tawny-rufous with bold white-spotted wing coverts; smallest of the Southeast Asian frogmouths; Javan endemic with finely patterned cryptic plumage.
About These Birds
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。
Horsfield's Frogmouth
マレー半島・スマトラ・ジャワ・ボルネオの低地と山麓の林に生息する中型のガマグチヨタカ（21〜25cm）。赤褐色の胸帯を持つ暗褐色の羽毛。密な林下生えの夜行性昆虫食者。特徴的な口笛のような鳴き声で発見されることが多い。