Palawan frogmouth vs Dulit Frogmouth
Batrachostomus chaseni compared with Batrachostomus harterti
Side-by-Side Comparison
| Attribute | Palawan frogmouth | Dulit Frogmouth |
|---|---|---|
| Scientific Name | Batrachostomus chaseni | Batrachostomus harterti |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Podargidae | Podargidae |
| Conservation Status | Not Evaluated | Least Concern |
| Length | — | — |
| Wingspan | — | 48.4 cm (19.1 in) |
| Weight | 40.0 g (1.41 oz) | 206.0 g (7.27 oz) |
| Diet | Crepuscular hunter of large beetles and other insects; uses wide gape to engulf prey flushed … | Nocturnal carnivore feeding on large beetles, worms, and small lizards; also takes moths in low … |
| 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
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
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.
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.
Conservation Status
Palawan frogmouth
Dulit 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.
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
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.
Dulit Frogmouth
A medium-sized frogmouth (25-27 cm) endemic to montane forests of northern Borneo. Dark brown plumage. Nocturnal insectivore. One of the rarest and least known frogmouths, known from very few specimens. Limited information on ecology and behavior.