Sulawesi Cuckoo vs Sunda Cuckoo

Cuculus crassirostris compared with Cuculus lepidus

Side-by-Side Comparison

Attribute Sulawesi Cuckoo Sunda Cuckoo
Scientific Name Cuculus crassirostris Cuculus lepidus
Order Cuculiformes Cuculiformes
Family Cuculidae Cuculidae
Conservation Status Least Concern Least Concern
Length
Wingspan 41.2 cm (16.2 in) 31.0 cm (12.2 in)
Weight 85.0 g (3.00 oz) 78.0 g (2.75 oz)
Diet -- --
Clutch Size -- --
Population Trend

Habitat Comparison

Shared Habitats

Sulawesi Cuckoo only

None

Sunda Cuckoo only

None

Song & Call Comparison

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.

Sunda Cuckoo

Song

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

Conservation Status

Least Concern

Sulawesi Cuckoo

Least Concern

Sunda Cuckoo

How to Tell Them Apart

Sulawesi Cuckoo

Plumage

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

Sunda Cuckoo

Plumage

Sunda Cuckoo: gray above; white below with rufous barring; long dark tail; yellow eye-ring; Sunda islands endemic cuckoo

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.

Sunda Cuckoo

Sunda Cuckoo (Cuculus lepidus) — 28–31 cm. Grey above; barred underparts; yellow orbital ring. Restricted to montane forest of the Greater Sundas — Sumatra, Java, and Borneo. Brood parasite. Insectivore. Closely related to and formerly lumped with Himalayan and Oriental cuckoos.

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