Dulit Frogmouth vs Horsfield's Frogmouth
Batrachostomus harterti compared with Batrachostomus javensis
Side-by-Side Comparison
| Attribute | Dulit Frogmouth | Horsfield's Frogmouth |
|---|---|---|
| Scientific Name | Batrachostomus harterti | Batrachostomus javensis |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Podargidae | Podargidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 48.4 cm (19.1 in) | 22.2 cm (8.7 in) |
| Weight | 206.0 g (7.27 oz) | 46.333333333333336 g (1.63 oz) |
| Diet | Nocturnal carnivore feeding on large beetles, worms, and small lizards; also takes moths in low … | Feeds nocturnally on large beetles, millipedes, and worms; occasionally takes small lizards by ground-pouncing. |
| Clutch Size | -- | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
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
Horsfield's Frogmouth
Melodic 'choo-choo-choo' or plaintive whistle; repeated soft notes; calls from Javan and Philippine forest at night; pitch moderate; pairs often answer each other
Geographic Range & Migration
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.
Horsfield's Frogmouth
Found from the Thai-Malay Peninsula through Sumatra, Java, and Borneo to the Philippines. Resident in lowland and hill forest below 1,000 m.
Conservation Status
Dulit Frogmouth
Horsfield's Frogmouth
How to Tell Them Apart
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.
Horsfield's Frogmouth
Males grey-brown with black freckling and white scapular spots; females warm tawny-rufous with bold white-spotted wing coverts; smallest of the Southeast Asian frogmouths; Javan endemic with finely patterned cryptic plumage.
About These Birds
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.
Horsfield's Frogmouth
A medium-sized frogmouth (21-25 cm) found in lowland and foothill forests of the Malay Peninsula, Sumatra, Java, and Borneo. Dark brown plumage with rufous breast band. Nocturnal insectivore of dense forest undergrowth. Often detected by its distinctive whistled call.