Sunda Frogmouth vs Dulit Frogmouth
Batrachostomus cornutus compared with Batrachostomus harterti
Side-by-Side Comparison
| Attribute | Sunda Frogmouth | Dulit Frogmouth |
|---|---|---|
| Scientific Name | Batrachostomus cornutus | Batrachostomus harterti |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Podargidae | Podargidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 26.7 cm (10.5 in) | 48.4 cm (19.1 in) |
| Weight | 46.3 g (1.63 oz) | 206.0 g (7.27 oz) |
| Diet | Nocturnal forager on large insects and small lizards; sallies from perches to ground in dense … | 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
Sunda Frogmouth
Soft 'koo-koo' or melodic hooting; moderate pitch; calls from Sundaic lowland forest at night; pairs duet with answering calls; alarm a sharp hiss; ventriloquial 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
Sunda Frogmouth
Found on Borneo, Sumatra, and adjacent small islands in lowland and hill rainforest below 1,000 m. Uncommon primary forest resident.
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
Sunda Frogmouth
Dulit Frogmouth
How to Tell Them Apart
Sunda Frogmouth
Males brown-grey finely stippled with black and bearing white scapular spots; small white feather tufts above eye form horn-like projections; females rufous-chestnut with white spots; Sundaic species uniquely decorated with …
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
Sunda Frogmouth
A medium-sized frogmouth (23-28 cm) found in lowland rainforests of Borneo, Sumatra, and Java. Dark brown plumage with small ear-tufts. Nocturnal insectivore of forest interior. Distinguished from other Asian frogmouths by its horn-like feather tufts above the eyes.
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.