Dulit Frogmouth vs Bornean Frogmouth
Batrachostomus harterti compared with Batrachostomus mixtus
Side-by-Side Comparison
| Attribute | Dulit Frogmouth | Bornean Frogmouth |
|---|---|---|
| Scientific Name | Batrachostomus harterti | Batrachostomus mixtus |
| Order | Caprimulgiformes | Caprimulgiformes |
| Family | Podargidae | Podargidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 48.4 cm (19.1 in) | 23.6 cm (9.3 in) |
| Weight | 206.0 g (7.27 oz) | 46.3 g (1.63 oz) |
| Diet | Nocturnal carnivore feeding on large beetles, worms, and small lizards; also takes moths in low … | Nocturnal perch-and-pounce predator feeding on large invertebrates, small frogs, and lizards on the forest floor. |
| Clutch Size | -- | -- |
| 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
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
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.
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
Dulit Frogmouth
Bornean 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.
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
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.
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.