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Side-by-Side Comparison

Merkmal	Cocos Cuckoo	Dark Hawk-Cuckoo
Wissenschaftlicher Name	Coccyzus ferrugineus	Hierococcyx bocki
Ordnung	Cuculiformes	Cuculiformes
Familie	Cuculidae	Cuculidae
Erhaltungsstatus	Vulnerable	Least Concern
Länge	—	—
Flügelspannweite	25,9 cm (10.2 in)	35,9 cm (14.1 in)
Gewicht	70,0 g (2.47 oz)	137,0 g (4.83 oz)
Ernährung	--	--
Gelegegröße	1-2	--
Population Trend	—	—

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Habitat Comparison

Gemeinsame Lebensräume

🌲 Forest

Cocos Cuckoo only

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Dark Hawk-Cuckoo only

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Song & Call Comparison

Cocos Cuckoo

Gesang

Loud, resonant melodic call; rich notes building in musical sequence through dense tropical forest. Vocalization pattern typical of this species in its native habitat.

Dark Hawk-Cuckoo

Gesang

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

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Erhaltungsstatus

Vulnerable

Cocos Cuckoo

Least Concern

Dark Hawk-Cuckoo

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How to Tell Them Apart

Cocos Cuckoo

Gefieder

Black-bellied Cuckoo: rufous above; black belly; white throat; red orbital ring; long rufous tail; yellow-green bill; neotropical

Dark Hawk-Cuckoo

Gefieder

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

Cocos Cuckoo

Cocos Cuckoo (Coccyzus ferrugineus) — 31–35 cm. Richly rufous-brown above; cinnamon-buff below; graduated tail; yellow lower mandible. Endemic to Cocos Island, Costa Rica (a UNESCO World Heritage Site). Non-parasitic. Insectivore. Vulnerable due to its extremely restricted range and introduced predators.

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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Guira Cuckoo Guira guira Western Koel Eudynamys scolopaceus Whistling Hawk-Cuckoo Hierococcyx nisicolor White-browed Coucal Centropus superciliosus All Cuculidae birds →

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