Sulawesi Cuckoo vs Oriental Cuckoo
Cuculus crassirostris compared with Cuculus optatus
Side-by-Side Comparison
| Attribute | Sulawesi Cuckoo | Oriental Cuckoo |
|---|---|---|
| Scientific Name | Cuculus crassirostris | Cuculus optatus |
| Order | Cuculiformes | Cuculiformes |
| Family | Cuculidae | Cuculidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 41.2 cm (16.2 in) | — |
| Weight | 85.0 g (3.00 oz) | 102.26666666666667 g (3.61 oz) |
| Diet | -- | -- |
| Clutch Size | -- | 1-2 |
| 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.
Oriental Cuckoo
Loud, far-carrying raucous call; harsh penetrating notes carrying through dense forest in Asia. Vocalization pattern typical of this species in its native habitat.
Conservation Status
Sulawesi Cuckoo
Oriental Cuckoo
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
Oriental Cuckoo
Oriental Cuckoo: gray above; white below with rufous barring; long dark tail; yellow eye-ring; broad barring; Asian migrant species
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.
Oriental Cuckoo
Oriental Cuckoo (Cuculus optatus) — 30–33 cm. Grey above; barred white underparts; yellow orbital ring; long tail. Widespread breeder across Siberia, Russia, and northeast Asia; winters to Southeast Asia and Australia. Brood parasite targeting warblers and flycatchers. Insectivore. Long-distance migratory cuckoo.