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Side-by-Side Comparison

Merkmal	Black-billed Koel	Rufous-winged Ground-cuckoo
Wissenschaftlicher Name	Eudynamys melanorhynchus	Neomorphus rufipennis
Ordnung	Cuculiformes	Cuculiformes
Familie	Cuculidae	Cuculidae
Erhaltungsstatus	Not Evaluated	Least Concern
Länge	—	—
Flügelspannweite	—	34,1 cm (13.4 in)
Gewicht	199,875 g (7.05 oz)	381,25 g (13.45 oz)
Ernährung	--	--
Gelegegröße	--	--
Population Trend	—	—

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Habitat Comparison

Gemeinsame Lebensräume

🌲 Wald

Black-billed Koel only

🏖️ Küste

Rufous-winged Ground-cuckoo only

-

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Song & Call Comparison

Black-billed Koel

Gesang

Loud, resonant call with musical quality; rich carrying notes given from tall forest tree in Borneo.

Rufous-winged Ground-cuckoo

Gesang

Deep, hollow resonant call; powerful low-frequency sound carrying across dense lowland tropical forest floor.

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Erhaltungsstatus

Not Evaluated

Black-billed Koel

Least Concern

Rufous-winged Ground-cuckoo

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How to Tell Them Apart

Black-billed Koel

Gefieder

Golden Bronze-cuckoo: golden-bronze iridescence; white barred underparts; golden-green head; bronze sheen; small Pacific cuckoo

Rufous-winged Ground-cuckoo

Gefieder

Pheasant Coucal: dark glossy black head and body; rufous-brown wings; strongly barred dark tail; reddish eye; terrestrial habits

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About These Birds

Black-billed Koel

Black-billed Koel (Eudynamys melanorhynchus) — 38–44 cm. Male glossy black with a dark bill (unlike related koels with pale bills); female similar to Western Koel female. Endemic to Sulawesi and Sula Islands in Indonesia. Brood parasite; hosts include corvids. Frugivore and insectivore.

Rufous-winged Ground-cuckoo

Rufous-winged Ground-cuckoo (Neomorphus rufipennis) — 46–50 cm. Bronze-green above; rufous wing panels; pale buff below. Found in humid forest of Venezuela, Guyana, and northern Brazil. Non-parasitic; follows army ants. Insectivore and small vertebrate predator. Rarely encountered; Near Threatened.

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