Grey-bellied Cuckoo vs African Emerald Cuckoo

Cacomantis passerinus compared with Chrysococcyx cupreus

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Side-by-Side Comparison

Attribute Grey-bellied Cuckoo African Emerald Cuckoo
Scientific Name Cacomantis passerinus Chrysococcyx cupreus
Order Cuculiformes Cuculiformes
Family Cuculidae Cuculidae
Conservation Status Least Concern Least Concern
Length
Wingspan 22.6 cm (8.9 in) 21.1 cm (8.3 in)
Weight 24.884999999999998 g (0.88 oz) 38.0 g (1.34 oz)
Diet -- --
Clutch Size -- --
Population Trend
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Habitat Comparison

Shared Habitats

None

Grey-bellied Cuckoo only

African Emerald Cuckoo only

None

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Song & Call Comparison

Grey-bellied Cuckoo

Song

Loud, melodic call with musical resonant quality; rich notes building in sequence from forest canopy.

African Emerald Cuckoo

Song

Deep, hollow resonant booming call; powerful low notes carrying far through dense tropical forest. Vocalization pattern typical of this species in its native habitat.

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Conservation Status

Least Concern

Grey-bellied Cuckoo

Least Concern

African Emerald Cuckoo

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How to Tell Them Apart

Grey-bellied Cuckoo

Plumage

Grey-bellied Cuckoo: gray above; pale gray-white below; long dark tail; yellow eye-ring; female has rufous morph; southern Asia

African Emerald Cuckoo

Plumage

New Caledonian Bronze-cuckoo: bronze-green above; barred white below; island endemic; red eye; iridescent bronze-green; small size

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About These Birds

Grey-bellied Cuckoo

Grey-bellied Cuckoo (Cacomantis passerinus) — 21–24 cm. Grey above; pale grey below; yellow orbital ring. Inhabits open woodland, forest edge, and scrub across South Asia and Southeast Asia. Brood parasite targeting tailorbirds, babblers, and other passerines. Insectivore.

African Emerald Cuckoo

African Emerald Cuckoo (Chrysococcyx cupreus) — 20–22 cm. Male: dazzling emerald green above and on breast; yellow belly; red bill. Female: bronze-green above; rufous-barred below. Inhabits primary forest and dense secondary growth across West and Central Africa. Brood parasite targeting sunbirds and other small passerines. Insectivore.

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