Oreoicidae is a newly recognized family of small insectivorous songbirds from New Guinea and Australia, commonly known as the Australo-Papuan bellbirds. The family contains three genera, each containing a single species: Aleadryas, which contains the rufous-naped bellbird; Ornorectes, which contains the piping bellbird; and Oreoica, which contains the crested bellbird.
The family occupies a range of habitats. Two species, the rufous-naped bellbird and the piping bellbird, are endemic to New Guinea, whilst the crested bellbird is endemic to Australia. The two New Guinean species are found in rainforest; lowland and hill forest in the piping bellbird, or montane forest and secondary forest in the case of the rufous-naped bellbird. The crested bellbird occupies drier habitats in Australia including dry woodlands and scrublands.