African Emerald Cuckoo vs Common Hawk-Cuckoo

Chrysococcyx cupreus compared with Hierococcyx varius

Side-by-Side Comparison

Attribute African Emerald Cuckoo Common Hawk-Cuckoo
Scientific Name Chrysococcyx cupreus Hierococcyx varius
Order Cuculiformes Cuculiformes
Family Cuculidae Cuculidae
Conservation Status Least Concern Least Concern
Length — —
Wingspan 21.1 cm (8.3 in) 38.2 cm (15.0 in)
Weight 38.0 g (1.34 oz) 101.5 g (3.58 oz)
Diet -- --
Clutch Size -- 2
Population Trend — —

Habitat Comparison

Shared Habitats

None

African Emerald Cuckoo only

None

Common Hawk-Cuckoo only

Song & Call Comparison

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.

Common Hawk-Cuckoo

Song

Loud, raucous call with harsh quality; penetrating far-carrying notes given from forest canopy. Vocalization pattern typical of this species in its native habitat.

Conservation Status

Least Concern

African Emerald Cuckoo

Least Concern

Common Hawk-Cuckoo

How to Tell Them Apart

African Emerald Cuckoo

Common Hawk-Cuckoo

Plumage

Common Hawk-Cuckoo: gray above; white below with rufous barring; hawk-mimic; long barred tail; yellow eye-ring; brain-fever bird

About These Birds

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.

Common Hawk-Cuckoo

Common Hawk-Cuckoo (Hierococcyx varius) — 34–38 cm. Grey above; pale below with rufous streaking; hawk-like flight; barred tail. Widespread across the Indian subcontinent in forest, woodland, and plantation. Brood parasite targeting babblers. Insectivore. Its frantic rising call of 'brain-fever' is iconic in South Asian soundscapes.

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