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Side-by-Side Comparison

Attribute	Dark Hawk-Cuckoo	Scaled Ground-Cuckoo
Scientific Name	Hierococcyx bocki	Neomorphus squamiger
Order	Cuculiformes	Cuculiformes
Family	Cuculidae	Cuculidae
Conservation Status	Least Concern	Not Evaluated
Length	—	—
Wingspan	35.9 cm (14.1 in)	—
Weight	137.0 g (4.83 oz)	340.0 g (11.99 oz)
Diet	--	--
Clutch Size	--	--
Population Trend	—	—

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Habitat Comparison

Shared Habitats

🌲 Forest

Dark Hawk-Cuckoo only

None

Scaled Ground-Cuckoo only

None

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Song & Call Comparison

Dark Hawk-Cuckoo

Song

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

Scaled Ground-Cuckoo

Song

Deep, hollow booming call; resonant bass notes carrying far across dense humid tropical forest floor.

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Conservation Status

Least Concern

Dark Hawk-Cuckoo

Not Evaluated

Scaled Ground-Cuckoo

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How to Tell Them Apart

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

Scaled Ground-Cuckoo

Plumage

Banded Ground-cuckoo: rufous-buff below with dark barring; dark olive above; blue facial skin; long tail; barred pattern below

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About These Birds

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.

Scaled Ground-Cuckoo

Scaled Ground-Cuckoo (Neomorphus squamiger) — 45–48 cm. Bronze-olive above; scaled white-tipped breast; rufous flanks; bare blue orbital ring. Restricted to humid eastern Amazonian forest in Pará, Brazil. Non-parasitic; follows army ants. Insectivore. Vulnerable; small range threatened by deforestation.

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