Black-billed Sicklebill - The Black-billed Sicklebill is distributed to mountain forests of New Guinea. Its diet consists mainly of fruit and arthropods. The female lays one to two pale cream eggs with brown and grey spots.
Pale-billed Sicklebill - The Pale-billed Sicklebill is distributed to lowland rainforests of northwestern New Guinea. Its diet consists mainly of fruits and arthropods.
Black Sicklebill - With up to 110 cm in length, the male Black Sicklebill is the longest member of Paradisaeidae, though the Curl-crested Manucode has a larger body. The diet consists mainly of fruits and arthropods. The male is polygamous and performs a horizontal courtship display with the pectoral plumes raised around its head.
Brown Sicklebill - The Brown Sicklebill is distributed to mountain forests of New Guinea, Its appearance resembles the closely related and larger Black Sicklebill. In areas where these two large sicklebills met, the Brown Sicklebill replaced the latter species in higher altitudes. Its diet consists mainly of fruits, arthropods and small animals.