sicklebill

Sicklebill refers to a group of birds belonging to the genus Drepanornis, which is part of the bird-of-paradise family Paradisaeidae. These birds are found in the rainforests of New Guinea. The name "sicklebill" is derived from the distinctive, long, downward-curving bill found in both males and females, though it is typically more pronounced in males. This morphology is thought to be an adaptation for foraging in flowers, bark, and crevices for insects and nectar.

Male sicklebills are characterized by their iridescent plumage, often featuring vibrant colors on their heads, throats, and backs, which contrast with their darker bodies. Females are generally more subdued in color, typically olive-brown, allowing for better camouflage while nesting. Both sexes have relatively long tails.

Sicklebills are known for their elaborate courtship displays, where males utilize their specialized bills to impress females. These displays often involve specific vocalizations and intricate movements within their territories. They are primarily insectivorous but also supplement their diet with fruits and nectar. The two recognized species are the Great Sicklebill (Drepanornis albertisii) and the Biak Sicklebill (Drepanornis bruijnii). The latter is considered critically endangered due to habitat loss and fragmentation.