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Side-by-Side Comparison

Attribute	Yellow-billed Cuckoo	Rufous-winged Ground-cuckoo
Scientific Name	Coccyzus americanus	Neomorphus rufipennis
Order	Cuculiformes	Cuculiformes
Family	Cuculidae	Cuculidae
Conservation Status	Least Concern	Least Concern
Length	—	—
Wingspan	28.7 cm (11.3 in)	34.1 cm (13.4 in)
Weight	56.73333333333333 g (2.00 oz)	381.25 g (13.45 oz)
Diet	--	--
Clutch Size	1-5	--
Population Trend	—	—

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Habitat Comparison

Shared Habitats

🌲 Forest

Yellow-billed Cuckoo only

None

Rufous-winged Ground-cuckoo only

None

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Song & Call Comparison

Yellow-billed Cuckoo

Song

Loud, far-carrying resonant call; deep musical notes audible impressively through dense tropical forest.

Rufous-winged Ground-cuckoo

Song

Deep, hollow resonant call; powerful low-frequency sound carrying across dense lowland tropical forest floor.

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Conservation Status

Least Concern

Yellow-billed Cuckoo

Least Concern

Rufous-winged Ground-cuckoo

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How to Tell Them Apart

Yellow-billed Cuckoo

Plumage

Little Cuckoo: small; rich chestnut-rufous above; pale buff below; rufous tail; yellow bill; neotropical squirrel cuckoo group

Rufous-winged Ground-cuckoo

Plumage

Pheasant Coucal: dark glossy black head and body; rufous-brown wings; strongly barred dark tail; reddish eye; terrestrial habits

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About These Birds

Yellow-billed Cuckoo

Yellow-billed Cuckoo (Coccyzus americanus) — 27–32 cm. Brown above; white below; yellow lower mandible; rufous wing patches in flight; white-spotted tail. Migratory breeder in North America; winters in South America. Non-parasitic. Insectivore specialising in caterpillars and cicadas. Western population listed as Threatened.

Rufous-winged Ground-cuckoo

Rufous-winged Ground-cuckoo (Neomorphus rufipennis) — 46–50 cm. Bronze-green above; rufous wing panels; pale buff below. Found in humid forest of Venezuela, Guyana, and northern Brazil. Non-parasitic; follows army ants. Insectivore and small vertebrate predator. Rarely encountered; Near Threatened.

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More Birds to Explore

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