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Song & Call Comparison
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Song & Call Comparison
Green-billed Coucal
Song
Loud, nasal call with carrying quality; distinctive resonant notes given from tall African forest tree.
Dark Hawk-Cuckoo
Song
Loud, raucous call with harsh quality; penetrating notes carrying through dense forest in South Asia.
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Geographic Range & Migration
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Conservation Status Comparison
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Conservation Status
Vulnerable
Green-billed Coucal
Least Concern
Dark Hawk-Cuckoo
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Identification Tips — How to Tell Them Apart
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How to Tell Them Apart
Green-billed Coucal
Plumage
Sunda Coucal: dark glossy brown above; rufous wings; pale buff-cream below; long graduated dark tail; red eye; forest-dwelling
Dark Hawk-Cuckoo
Plumage
Dark Hawk-Cuckoo: dark brown above; pale below with dense dark barring; hawk-like; long barred tail; yellow orbital ring; dark morph
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About Each Bird (Descriptions)
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Green-billed Coucal (Centropus chlororhynchos) — 43–47 cm. Blue-black with a long graduated tail; pale greenish bill. Endemic to Sri Lanka in wet forest and dense riverine scrub. Non-parasitic. Omnivore; hunts lizards, large insects, and frogs. Vulnerable; highly forest-dependent and threatened by ongoing deforestation.
Dark Hawk-Cuckoo (Hierococcyx bocki) — 28–31 cm. Dark grey above; pale below with darker streaking; barred tail. Restricted to montane forest of the Malay Peninsula. Brood parasite. Insectivore. Rare; poorly documented.
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Related Comparisons
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More Birds in Family
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