Blyth's Frogmouth vs Sumatran Frogmouth
Batrachostomus affinis 比較対象 Batrachostomus poliolophus
Side-by-Side Comparison
| 属性 | Blyth's Frogmouth | Sumatran Frogmouth |
|---|---|---|
| 学名 | Batrachostomus affinis | Batrachostomus poliolophus |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Podargidae | Podargidae |
| 保全状況 | Not Evaluated | Least Concern |
| 体長 | — | — |
| 翼開長 | — | 24.1 cm (9.5 in) |
| 体重 | 47.8 g (1.69 oz) | 46.3 g (1.63 oz) |
| 食性 | Night-active insectivore feeding on large beetles, moths, and crickets; drops from low branches to capture … | Night hunter detecting prey by sound; takes large beetles, frogs, and lizards in swift pouncing … |
| 一腹卵数 | 1-2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Blyth's Frogmouth
Soft, repeated hooting whistle; 'wooo' calls from lowland Indochina forest; gentle pitch; calls at night from dense undergrowth; closely related to Horsfield's Frogmouth
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
Blyth's Frogmouth
Found in the Thai-Malay Peninsula, Sumatra, and Borneo in lowland forest and peat swamp forest. Closely related to Horsfield's Frogmouth.
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
Blyth's Frogmouth
Sumatran Frogmouth
How to Tell Them Apart
Blyth's Frogmouth
Males brown-grey with dark vermiculations and white scapular spots; females rufous-buff with spotted coverts; Sundaland frogmouth recently split from Horsfield's; differs in marginally warmer brown tone and distribution.
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
Blyth's Frogmouth
ミャンマーから東南アジア本土を経てボルネオにかけての低地林に生息する中型のガマグチヨタカ（23〜25cm）。淡い首輪を持つ褐色の羽毛。夜行性の昆虫食者。ホースフィールドガマグチヨタカと近縁。原生林と二次林の下生えに生息する。
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。