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Song & Call Comparison
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Song & Call Comparison
Black-billed Cuckoo
Tiếng Hót
Loud, far-carrying resonant call; deep notes audible across dense forest in Asia. Vocalization pattern typical of this species in its native habitat.
Dark Hawk-Cuckoo
Tiếng Hót
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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Tình Trạng Bảo Tồn
Least Concern
Black-billed Cuckoo
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
Black-billed Cuckoo
Bộ Lông
Gray-capped Cuckoo: gray cap; brown above; pale below; graduated dark tail; South American species; forest cuckoo
Dark Hawk-Cuckoo
Bộ Lông
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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Black-billed Cuckoo (Coccyzus erythropthalmus) — 26–31 cm. Brown above; white below; all-dark bill; narrow red orbital ring; tail with small white spots. Migratory breeder in eastern North America; winters in South America. Non-parasitic. Insectivore specialising in tent caterpillars and other hairy larvae.
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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