Sulawesi Cuckoo vs Black-billed Koel
Cuculus crassirostris compared with Eudynamys melanorhynchus
Side-by-Side Comparison
| Attribute | Sulawesi Cuckoo | Black-billed Koel |
|---|---|---|
| Scientific Name | Cuculus crassirostris | Eudynamys melanorhynchus |
| Order | Cuculiformes | Cuculiformes |
| Family | Cuculidae | Cuculidae |
| Conservation Status | Least Concern | Not Evaluated |
| Length | — | — |
| Wingspan | 41.2 cm (16.2 in) | — |
| Weight | 85.0 g (3.00 oz) | 199.875 g (7.05 oz) |
| Diet | -- | -- |
| Clutch Size | -- | -- |
| Population Trend | — | — |
Habitat Comparison
Song & Call Comparison
Sulawesi Cuckoo
Loud, raucous call with harsh quality; penetrating notes carrying through dense forest in Asia. Vocalization pattern typical of this species in its native habitat.
Black-billed Koel
Loud, resonant call with musical quality; rich carrying notes given from tall forest tree in Borneo.
Conservation Status
Sulawesi Cuckoo
Black-billed Koel
How to Tell Them Apart
Sulawesi Cuckoo
Sulawesi Cuckoo: dark gray-brown above; pale below; long dark tail; yellow orbital ring; Sulawesi endemic; larger than most Cuculus
Black-billed Koel
About These Birds
Sulawesi Cuckoo
Sulawesi Cuckoo (Cuculus crassirostris) — 30–34 cm. Dark grey above; pale below with bold brown-grey barring; heavier bill than most Cuculus. Endemic to Sulawesi in montane forest. Brood parasite. Insectivore. Poorly known.
Black-billed Koel
Black-billed Koel (Eudynamys melanorhynchus) — 38–44 cm. Male glossy black with a dark bill (unlike related koels with pale bills); female similar to Western Koel female. Endemic to Sulawesi and Sula Islands in Indonesia. Brood parasite; hosts include corvids. Frugivore and insectivore.