Large Frogmouth vs Dulit Frogmouth
Batrachostomus auritus compared with Batrachostomus harterti
Side-by-Side Comparison
| Attribute | Large Frogmouth | Dulit Frogmouth |
|---|---|---|
| Scientific Name | Batrachostomus auritus | Batrachostomus harterti |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Podargidae | Podargidae |
| Conservation Status | Vulnerable | Least Concern |
| Length | — | — |
| Wingspan | 52.1 cm (20.5 in) | 48.4 cm (19.1 in) |
| Weight | 206.0 g (7.27 oz) | 206.0 g (7.27 oz) |
| Diet | 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 … |
| Clutch Size | 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.
Conservation Status
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
A large frogmouth (38-42 cm) of lowland rainforests in Borneo and the Malay Peninsula. Rich brown plumage with white ear-tufts. Nocturnal insectivore with an enormous gape. The largest Asian frogmouth, feeding on large insects and small vertebrates.
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.