Sri Lanka Frogmouth vs Papuan Frogmouth

Batrachostomus moniliger compared with Podargus papuensis

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Side-by-Side Comparison

Attribute Sri Lanka Frogmouth Papuan Frogmouth
Scientific Name Batrachostomus moniliger Podargus papuensis
Order Caprimulgiformes Caprimulgiformes
Family Podargidae Podargidae
Conservation Status Least Concern Least Concern
Length
Wingspan 23.2 cm (9.1 in) 57.9 cm (22.8 in)
Weight 52.75 g (1.86 oz) 389.1666666666667 g (13.73 oz)
Diet Crepuscular and nocturnal ground-gleaner eating large arthropods, worms, and occasional small frogs near forest streams. Night hunter feeding primarily on large invertebrates and occasionally small lizards by perch-and-pounce technique.
Clutch Size 1 1-2
Population Trend
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Habitat Comparison

Shared Habitats

Sri Lanka Frogmouth only

None

Papuan Frogmouth only

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Song & Call Comparison

Sri Lanka Frogmouth

Song

Repeated mellow 'oo-or' or 'kaow'; descending melodic whistle; calls at night from Sri Lankan rainforest; pairs often duet; alarm a soft hiss when threatened

Papuan Frogmouth

Song

Deep, booming 'oom-oom'; resonant hollow hoots from New Guinea rainforest; very large bird produces powerful low-frequency calls; alarm a loud hiss; calls at night

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Geographic Range & Migration

Sri Lanka Frogmouth

Endemic to Sri Lanka and the Western Ghats of southwestern India. Resident in tropical rainforest up to 1,800 m. Classified as Vulnerable.

Papuan Frogmouth

Found across New Guinea and adjacent islands. Resident in lowland and hill forest, forest edge, and secondary growth up to 1,500 m.

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Conservation Status

Least Concern

Sri Lanka Frogmouth

Least Concern

Papuan Frogmouth

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How to Tell Them Apart

Sri Lanka Frogmouth

Plumage

Males brown-grey with black vermiculations and white scapular spots arranged in necklace pattern; females warm rufous with white spots; endemic to Sri Lanka and SW India; 'moniliger' refers to the …

Papuan Frogmouth

Plumage

Large; grey-brown upperparts finely vermiculated with black and buff; underparts pale grey-buff finely streaked and barred; prominent yellow eyes; females often more rufous-brown; largest frogmouth species in the Papuan region.

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About These Birds

Sri Lanka Frogmouth

A small frogmouth (19-23 cm) endemic to the Western Ghats and Sri Lanka. Rufous-brown plumage with fine white spotting. Nocturnal insectivore of dense wet forest undergrowth. Known for its loud, distinctive frog-like croaking calls at dusk, inspiring its common name.

Papuan Frogmouth

The largest frogmouth (50-60 cm) found in New Guinea and surrounding islands. Rufous-brown plumage with white spots and vermiculations. Massive bill and large red or yellow eyes. Nocturnal insectivore of lowland and hill forests, feeding on large insects and small vertebrates.

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