
Pachycephala is a genus of birds native to Oceania and Southeast Asia. They are commonly known as typical whistlers. Older guidebooks may refer to them as thickheads, a literal translation of the generic name, which is derived from the Ancient Greek terms pachys "thick" + kephale "head". This lineage originated in Australo-Papua and later colonized the Indonesian and Philippine archipelagos to the west and the Pacific archipelagos to the east.

The Australian golden whistler or golden whistler, is a species of bird found in forest, woodland, mallee, mangrove and scrub in Australia Most populations are resident, but some in south-eastern Australia migrate north during the winter. Its taxonomy is highly complex and remains a matter of dispute, with some authorities including as many as 59 subspecies of the golden whistler, while others treat several of these as separate species.

The bare-throated whistler is a species of bird in the family Pachycephalidae. It is endemic to the Lesser Sundas.

The black-chinned whistler is a species of bird in the family Pachycephalidae, endemic to Halmahera and adjacent smaller islands in North Maluku in Indonesia.

The black-headed whistler is a species of bird in the family Pachycephalidae. It is found on the Aru Islands and New Guinea. Its natural habitat is subtropical or tropical moist lowland forests.

The Bornean whistler or Bornean mountain whistler, is a species of bird in the family Pachycephalidae. It is endemic to the island of Borneo.

The drab whistler is a species of bird in the family Pachycephalidae. It is found in the Maluku Islands. Its natural habitat is subtropical or tropical moist lowland forests.
The Fiji whistler is a species of bird in the family Pachycephalidae, endemic to Fiji.

The Gilbert's whistler is a monotypic species of bird endemic to Australia, scattered in semi-arid zones of southern Australia.

The golden-backed whistler or yellow-backed whistler, is a species of bird in the family Pachycephalidae. It is found throughout New Guinea.

The green-backed whistler or olive-backed whistler, is a species of bird in the family Pachycephalidae. It is endemic to the Philippines.

The grey whistler or brown whistler, is a species of bird in the family Pachycephalidae. It is found in northern Australia and New Guinea. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical mangrove forest.

The island whistler is a species of bird in the family Pachycephalidae endemic to the Moluccas (Indonesia). Its natural habitats are subtropical or tropical dry forests and subtropical or tropical mangrove forests.

The Lord Howe golden whistler, also known as the Lord Howe whistler or Lord Howe Island golden whistler, and locally as the “robin” or “yellow robin”, is a small bird in the whistler family, Pachycephalidae. It is a subspecies of the Australian golden whistler that is endemic to Lord Howe Island in the Tasman Sea, part of New South Wales, Australia.

Lorentz's whistler is a species of bird in the family Pachycephalidae. It is found in the mid-western New Guinea Highlands. Its natural habitat is subtropical or tropical moist montane forests. It was originally described as a subspecies of the regent whistler

The Louisiade whistler is a species of bird in the family Pachycephalidae, which is endemic to the Louisiade Archipelago south-east of New Guinea. It was split from the Bismarck whistler by the IOC in 2015.

The mangrove golden whistler or black-tailed whistler is a species of bird in the family Pachycephalidae. It is found in mangrove forests and adjacent wet forests of Papua New Guinea and Australia.

The mangrove whistler is a species of bird in the family Pachycephalidae found in South-east Asia.

The Melanesian whistler or Vanuatu whistler, is a species of passerine bird in the whistler family Pachycephalidae. It is found on the Loyalty Islands, Vanuatu, and Vanikoro in the far south-eastern Solomons.

The morningbird is a songbird species in the family Pachycephalidae.

The New Caledonian whistler is a species of bird in the family Pachycephalidae. It is endemic to New Caledonia.

The Norfolk golden whistler, also known as the Norfolk Island whistler or Norfolk Island thickhead, and locally as the “tamey”, is a small bird in the whistler family, Pachycephalidae. It is a subspecies of the Australian golden whistler and endemic to Norfolk Island, an Australian territory in the Tasman Sea, between Australia and New Zealand.

The olive whistler or olivaceous whistler, is a species of bird in the family Pachycephalidae, the whistlers, that is native to southeastern Australia.

The oriole whistler, also known as the yellow-throated whistler, is a species of bird in the family Pachycephalidae, which is endemic to the Solomon Islands (archipelago).

The vulnerable Red-lored Whistler is one of nine species of Whistler occurring in Australia and a member of the Pachycephalidae family which includes Whistlers, Shrike-thrushes, Pitohuis and allies. The limited range of this endemic bird of the Mallee woodland in one small area in New South Wales and another, larger area encompassing north-western Victoria and adjacent South Australia has seen it listed Nationally as Vulnerable.

The regent whistler is a species of bird in the family Pachycephalidae. It is endemic to the highlands of New Guinea. Its natural habitat is subtropical or tropical moist montane forests.

The rufous whistler is a species of whistler found in New Caledonia and Australia. Predominantly a reddish-brown and grey bird, it makes up for its subdued plumage with its song-making ability. Like many other members of the Pachycephalidae, it has a variety of musical calls.

The rusty whistler is a species of bird in the family Pachycephalidae. It is endemic to lowland mountain areas of New Guinea. Its natural habitat is subtropical or tropical moist lowland forests.

The rusty-breasted whistler, also known as the fulvous-tinted whistler, is a species of bird in the family Pachycephalidae. It is endemic to Indonesia, where it ranges from Java east to Alor and north to the Selayar Islands.

The Samoan whistler, also known as the yellow-fronted whistler, is a species of bird in the family Pachycephalidae. It is endemic to Samoa, where found in forest, plantations and gardens.

Sclater's whistler or the hill golden whistler, is a species of bird in the family Pachycephalidae found in the highlands of New Guinea. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist montane forests.
The sulphur-vented whistler or sulphur-bellied whistler is a species of bird in the family Pachycephalidae. It is endemic to Sulawesi in Indonesia. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical moist montane forest.

The Tongan whistler is a species of bird in the family Pachycephalidae. It is endemic to the islands of Vava'u and Late in Tonga. It is mainly found in tropical primary forest, but can sometimes be seen in second growth or wooded plantations. It is similar to the Australian golden whistler in appearance, but the head and throat of the male is entirely black, and the underparts of the female are yellow. The Tongan whistler is threatened by habitat loss. The Tongan whistler was also described by Jacques Pucheran in the genus Eopsaltria and has been variably considered as a subspecies of the golden whistler.

The Wallacean whistler is a species of bird in the family Pachycephalidae. It is native to the eastern Lesser Sunda Islands. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical mangrove forests.

The western whistler is a species of bird in the family Pachycephalidae found in southwest Australia. Prior to 2015, the western whistler was considered as a subspecies of the Australian golden whistler until recognized as a separate species following molecular studies that suggested a closer relationship to the mangrove golden whistler species complex.

The fawn-breasted whistler is a species of bird in the family Pachycephalidae. It is found on the islands of Timor and Wetar. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical mangrove forests.

The white-bellied whistler is a species of bird in the family Pachycephalidae. The species has an oddly discontinuous distribution, occurring in two small patches of northern New Guinea, one small patch in south eastern New Guinea and on Rossel Island in the Louisiade Archipelago. The species uses a variety of habitats, including wet eucalyptus forests, mangrove forests, savanna, and modified habitats like rubber plantations.

The white-breasted whistler is a species of bird in the family Pachycephalidae. It is endemic to Australia. Its natural habitat is subtropical or tropical mangrove forests.

The yellow-bellied whistler, or Philippine whistler, is a species of bird in the family Pachycephalidae that is endemic to the Philippines.

The yellow-throated whistler or Banda Sea whistler, is a species of bird in the family Pachycephalidae. It is endemic to central and south-eastern Wallacea, where it ranges from Timor east to the Tanimbars and north to Seram and Banggai. The oriole whistler is sometimes alternatively called the yellow-throated whistler, leading to confusion between both species.