Moluccan Cuckoo vs Sulawesi Cuckoo

Cacomantis aeruginosus compared with Cuculus crassirostris

Side-by-Side Comparison

Attribute Moluccan Cuckoo Sulawesi Cuckoo
Scientific Name Cacomantis aeruginosus Cuculus crassirostris
Order Cuculiformes Cuculiformes
Family Cuculidae Cuculidae
Conservation Status Least Concern Least Concern
Length
Wingspan 22.4 cm (8.8 in) 41.2 cm (16.2 in)
Weight 35.8 g (1.26 oz) 85.0 g (3.00 oz)
Diet -- --
Clutch Size -- --
Population Trend

Habitat Comparison

Shared Habitats

Moluccan Cuckoo only

None

Sulawesi Cuckoo only

None

Song & Call Comparison

Moluccan Cuckoo

Song

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

Sulawesi Cuckoo

Song

Loud, raucous call with harsh quality; penetrating notes carrying through dense forest in Asia. Vocalization pattern typical of this species in its native habitat.

Conservation Status

Least Concern

Moluccan Cuckoo

Least Concern

Sulawesi Cuckoo

How to Tell Them Apart

Moluccan Cuckoo

Plumage

Moluccan Cuckoo: dark olive-brown above; pale buff below; long dark graduated tail; yellow eye-ring; Moluccan island endemic

Sulawesi Cuckoo

Plumage

Sulawesi Cuckoo: dark gray-brown above; pale below; long dark tail; yellow orbital ring; Sulawesi endemic; larger than most Cuculus

About These Birds

Moluccan Cuckoo

Moluccan Cuckoo (Cacomantis aeruginosus) — 22–25 cm. Brown above with greenish gloss; pale buff-rufous below; yellow orbital ring. Endemic to the Moluccas, Indonesia. Inhabits forest and forest edge. Brood parasite. Insectivore.

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.

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