Klaas's Cuckoo vs Sulawesi Cuckoo

Chrysococcyx klaas compared with Cuculus crassirostris

Side-by-Side Comparison

Attribute Klaas's Cuckoo Sulawesi Cuckoo
Scientific Name Chrysococcyx klaas Cuculus crassirostris
Order Cuculiformes Cuculiformes
Family Cuculidae Cuculidae
Conservation Status Least Concern Least Concern
Length
Wingspan 19.8 cm (7.8 in) 41.2 cm (16.2 in)
Weight 27.919999999999998 g (0.98 oz) 85.0 g (3.00 oz)
Diet -- --
Clutch Size 1-2 --
Population Trend

Habitat Comparison

Shared Habitats

Klaas's Cuckoo only

None

Sulawesi Cuckoo only

None

Song & Call Comparison

Klaas's Cuckoo

Song

Loud, raucous call with harsh quality; penetrating rough notes carrying well through dense forest. 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

Klaas's Cuckoo

Least Concern

Sulawesi Cuckoo

How to Tell Them Apart

Klaas's Cuckoo

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

Klaas's Cuckoo

Klaas's Cuckoo (Chrysococcyx klaas) — 17–18 cm. Male: plain iridescent green above; white below with faint green-grey barring on flanks; white behind eye. Female: barred green-brown and buff. Inhabits forest edge, woodland, and gardens across sub-Saharan Africa. Brood parasite targeting sunbirds and warblers. 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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