Western Koel vs Saint Helena Cuckoo

Eudynamys scolopaceus compared with Nannococcyx psix

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Side-by-Side Comparison

Attribute Western Koel Saint Helena Cuckoo
Scientific Name Eudynamys scolopaceus Nannococcyx psix
Order Cuculiformes Cuculiformes
Family Cuculidae Cuculidae
Conservation Status Least Concern Extinct
Length
Wingspan 39.3 cm (15.5 in)
Weight 230.0 g (8.11 oz) 171.0 g (6.03 oz)
Diet -- --
Clutch Size 2-3 --
Population Trend
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Habitat Comparison

Shared Habitats

Western Koel only

None

Saint Helena Cuckoo only

None

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Song & Call Comparison

Western Koel

Song

Loud, far-carrying nasal call; distinctive penetrating notes audible through dense tropical forest. Vocalization pattern typical of this species in its native habitat.

Saint Helena Cuckoo

Song

Loud, far-carrying raucous call; harsh penetrating notes given from dense island forest canopy. Vocalization pattern typical of this species in its native habitat.

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Conservation Status

Least Concern

Western Koel

Extinct

Saint Helena Cuckoo

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How to Tell Them Apart

Western Koel

Plumage

Shining Bronze-cuckoo: brilliant iridescent golden-green above; white barred below; bronze-green head; reddish eye; small size

Saint Helena Cuckoo

Plumage

Saint Helena Cuckoo: extinct; brown above; pale below; long graduated tail; island cuckoo; known only from subfossil remains

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About These Birds

Western Koel

Western Koel (Eudynamys scolopaceus) — 39–46 cm. Male glossy black; female brown with white spots and barred underparts; red eye. Widespread from South Asia through mainland Southeast Asia. Brood parasite targeting crows and mynas. Frugivore and insectivore. Its rising wailing call heralds the Indian summer.

Saint Helena Cuckoo

Saint Helena Cuckoo (Nannococcyx psix) — ~25 cm. Extinct. Known only from subfossil remains from Saint Helena, South Atlantic. A small cuckoo inferred from bone morphology; likely became extinct following human colonisation of the island in the 16th century and the introduction of predators.

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