Birds-of-paradise, belonging to the family Paradisaeidae, are a group of 45 species known for their remarkable male plumage, with long, ornate feathers that may extend from various parts of their bodies. These birds are primarily found in eastern Indonesia, Papua New Guinea, and eastern Australia, where they frequent dense rainforest environments. Their diet is heavily fruit-based, supplemented by arthropods, and they exhibit a range of breeding systems from monogamy to polygamy. Unfortunately, some species face threats from hunting and habitat destruction.
First established as a family by William John Swainson in 1825, birds-of-paradise were once believed to be related to bowerbirds but are now considered to be closer to crows, jays, and monarch flycatchers. Phylogenetic studies have uncovered five main clades within the family, and their evolution dates back around 24 million years. The exact family classification has been refined over time, reassigning some species like satinbirds and Macgregor's bird-of-paradise to different families.
These birds vary dramatically in size and plumage, especially between the sexes, with females often sporting more subdued hues for camouflage. They are found throughout the forests of New Guinea with some species inhabiting Australian and Maluku Islands regions. Birds-of-paradise are important seed dispersers and exhibit complex and diverse mating rituals, including lekking and ritualized dances, which are driven by female preference. Concern for their conservation, due in part to historical hunting for their plumage and habitat loss, has increased, and they continue to fascinate birdwatchers from around the world with their beauty and intriguing behavior.