Palawan frogmouth vs Bornean Frogmouth
Batrachostomus chaseni compared with Batrachostomus mixtus
Side-by-Side Comparison
| Attribute | Palawan frogmouth | Bornean Frogmouth |
|---|---|---|
| Scientific Name | Batrachostomus chaseni | Batrachostomus mixtus |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Podargidae | Podargidae |
| Conservation Status | Not Evaluated | Least Concern |
| Length | — | — |
| Wingspan | — | 23.6 cm (9.3 in) |
| Weight | 40.0 g (1.41 oz) | 46.3 g (1.63 oz) |
| Diet | Crepuscular hunter of large beetles and other insects; uses wide gape to engulf prey flushed … | Nocturnal perch-and-pounce predator feeding on large invertebrates, small frogs, and lizards on the forest floor. |
| Clutch Size | 1-2 | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Palawan frogmouth
High, thin melodic whistle; calls at night from Palawan island forest; poorly documented endemic; presumed similar to Philippine Frogmouth in vocal 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
Palawan frogmouth
Endemic to Palawan Island in the western Philippines. Resident in lowland and hill forest up to 1,200 m. Rare; restricted to Palawan.
Bornean Frogmouth
Endemic to the highlands of Borneo at 900–2,400 m. Found in montane forest on Mount Kinabalu and adjacent ranges. Rare.
Conservation Status
Palawan frogmouth
Bornean Frogmouth
How to Tell Them Apart
Palawan frogmouth
Males greyish-brown with fine dark vermiculations and white scapular spotting; females rufous with white-spotted wing coverts; Palawan Island endemic; plumage closely resembles Philippine Frogmouth but restricted to single island.
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
Palawan frogmouth
A medium-sized frogmouth endemic to the island of Palawan in the Philippines. Dark rufous-brown plumage. Nocturnal insectivore of lowland primary forest. One of the least known frogmouths. Named after Frederick Chasen. Limited ecological data available.
Bornean Frogmouth
A medium-sized frogmouth (23-25 cm) endemic to the mountains of Borneo. Dark brown plumage. Nocturnal insectivore of montane moss forest. Recently split from Horsfield's Frogmouth. Limited ecological data; restricted to elevations above 600 m.