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Side-by-Side Comparison

Attribute	Long-billed Cuckoo	Dark Hawk-Cuckoo
Scientific Name	Chalcites megarhynchus	Hierococcyx bocki
Order	Cuculiformes	Cuculiformes
Family	Cuculidae	Cuculidae
Conservation Status	Least Concern	Least Concern
Length	—	—
Wingspan	19.4 cm (7.6 in)	35.9 cm (14.1 in)
Weight	31.25 g (1.10 oz)	137.0 g (4.83 oz)
Diet	--	--
Clutch Size	--	--
Population Trend	—	—

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Habitat Comparison

Shared Habitats

🌲 Forest

Long-billed Cuckoo only

None

Dark Hawk-Cuckoo only

None

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Song & Call Comparison

Long-billed Cuckoo

Song

Loud, melodic call with resonant quality; rich carrying notes given from tall tropical forest tree. Vocalization pattern typical of this species in its native habitat.

Dark Hawk-Cuckoo

Song

Loud, raucous call with harsh quality; penetrating notes carrying through dense forest in South Asia.

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Conservation Status

Least Concern

Long-billed Cuckoo

Least Concern

Dark Hawk-Cuckoo

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How to Tell Them Apart

Long-billed Cuckoo

Plumage

Little Bronze-cuckoo (Minutillus): smallest; bronze-green above; barred white below; red eye; iridescent golden-bronze; tiny size

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 These Birds

Long-billed Cuckoo

Long-billed Cuckoo (Chalcites megarhynchus) — 18–21 cm. Bronze-green above; white below with rufous barring; notably long bill. Inhabits montane and hill forest of New Guinea and nearby islands. Brood parasite; hosts include gerygones. Insectivore.

Dark Hawk-Cuckoo

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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More Birds to Explore

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