Black-billed Coucal

Centropus bernsteini

The Black-billed Coucal (Centropus bernsteini) is a distinctive, medium-sized, non-parasitic cuckoo endemic to the lowlands of New Guinea and the Aru Islands. Measuring approximately 45 cm (18 inches) in length and weighing between 200-250 grams, its entire plumage is a glossy, iridescent black, often appearing deep purple or blue in certain lights. A heavy, robust black bill, dark red to black iris, and black legs complete its uniform appearance. Key field marks include its overall black col...

Habitat

Found in dense, tangled undergrowth within lowland rainforests, forest edges, and secondary growth, often near water bodies, typically occurring below 700 meters elevation.

Diet

Feeds primarily on large insects such as grasshoppers, beetles, and caterpillars, as well as spiders, small lizards, frogs, and occasionally small birds or eggs, foraging mainly by walking on the ground and gleaning from vegetation.

Behavior

A largely terrestrial and secretive bird, the Black-billed Coucal is diurnal but most active during crepuscular hours, often skulking in dense cover. It forages primarily on the ground, scratching through leaf litter with its strong feet and bill to uncover prey. While specific details on territo...

Range

The Black-billed Coucal is endemic to the island of New Guinea and the adjacent Aru Islands, which are part of Indonesia. Its distribution spans both the Indonesian provinces of West Papua and Papua, as well as the nation of Papua New Guinea. This species is a year-round resident, exhibiting no s...

Conservation Status

Data Deficient

Fun Facts

- Unlike most cuckoos, the Black-billed Coucal is not a brood parasite; it builds its own nest and diligently raises its own young. - Females of this species are typically larger and heavier than males, a trait known as reverse sexual dimorphism. - These coucals possess a unique and powerful musk...

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