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Side-by-Side Comparison

Attribute	Kai Coucal	Rufous-winged Ground-cuckoo
Scientific Name	Centropus spilopterus	Neomorphus rufipennis
Order	Cuculiformes	Cuculiformes
Family	Cuculidae	Cuculidae
Conservation Status	Least Concern	Least Concern
Length	—	—
Wingspan	46.6 cm (18.3 in)	34.1 cm (13.4 in)
Weight	244.4 g (8.62 oz)	381.25 g (13.45 oz)
Diet	--	--
Clutch Size	--	--
Population Trend	—	—

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Habitat Comparison

Shared Habitats

🌲 Forest

Kai Coucal only

🌾 Grassland

Rufous-winged Ground-cuckoo only

None

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Song & Call Comparison

Kai Coucal

Song

Loud, far-carrying resonant call; deep hollow notes given repeatedly from tropical forest perch. Vocalization pattern typical of this species in its native habitat.

Rufous-winged Ground-cuckoo

Song

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

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Conservation Status

Least Concern

Kai Coucal

Least Concern

Rufous-winged Ground-cuckoo

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How to Tell Them Apart

Kai Coucal

Plumage

Burchell's Coucal: white eyebrow; streaked brown above; rufous wings; pale white below; long tail; red eye; bold white supercilium

Rufous-winged Ground-cuckoo

Plumage

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

Kai Coucal

Kai Coucal (Centropus spilopterus) — 42–46 cm. Chestnut-rufous with spotted wing coverts; black head and tail; heavy bill. Endemic to the Kai Islands, Indonesia. Inhabits forest and dense scrub. Non-parasitic. Omnivore. Poorly known due to its remote island range.

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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