Pachycephalidae
The
Pachycephalidae are a family of bird
species that includes the whistlers, shrikethrushes, and three of the
pitohuis, and is part of the ancient
Australo-Papuan radiation of
songbirds. The family includes 69 species that are separated into five
genera. Its members range from small to medium in size, and occupy most of Australasia. Australia and
New Guinea are the centre of their diversity and, in the case of the whistlers, the South Pacific islands as far as
Tonga and
Samoa and parts of Asia as far as India. The exact delimitation of boundaries of the family are uncertain, and one species, the
golden whistler, has been the subject of intense taxonomic scrutiny in recent years, with multiple subspecies and species-level revisions.
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