The thick-billed warbler breeds in the temperate east Palearctic, from south Siberia to west Mongolia. It is migratory, wintering in tropical South Asia and South-east Asia. It is a very rare vagrant to western Europe.
The hooded warbler is a New World warbler. It breeds in eastern North America across the eastern United States and into southernmost Canada (Ontario). It is migratory, wintering in Central America and the West Indies. Hooded warblers are very rare vagrants to western Europe.
The Seychelles warbler, also known as Seychelles brush warbler, is a small songbird found on five granitic and corraline islands in the Seychelles. It is a greenish-brown bird with long legs and a long slender bill. It is primarily found in forested areas on the islands. The Seychelles warbler is a rarity in that it exhibits cooperative breeding, or alloparenting, which means that the monogamous pair is assisted by nonbreeding female helpers.
The nightingale reed warbler, or Guam reed-warbler, is an extinct songbird that was endemic to Guam.
The lesser swamp warbler or Cape reed warbler is an Old World warbler in the genus Acrocephalus. It is a resident breeder in Africa from the Democratic Republic of the Congo, the Chad and Ethiopia south to South Africa. This is a common species of reedbeds in standing water.
The Acrocephalidae are a family of oscine passerine birds, in the superfamily Sylvioidea.
The Tuamotu reed warbler is a species of Old World warbler in the family Acrocephalidae. It is found only in French Polynesia.
The blunt-winged warbler is a marsh-warbler. The species was first described by Robert Swinhoe in 1870. It was formerly included in the "Old World warbler" assemblage.
The greater swamp warbler is a species of Old World warbler in the family Acrocephalidae. It is found in Angola, Botswana, Burundi, Cameroon, Central African Republic, Chad, Republic of the Congo, Democratic Republic of the Congo, Equatorial Guinea, Gabon, Ghana, Kenya, Mali, Mauritania, Namibia, Nigeria, Rwanda, Senegal, South Sudan, Tanzania, Togo, Uganda, Zambia, and Zimbabwe. Its natural habitat is swamps.
The papyrus yellow warbler, papyrus flycatcher-warbler or thin-billed flycatcher-warbler is a species of tree warbler; formerly, these were placed in the paraphyletic "Old World warblers". It is monotypic in its genus. It is found in Burundi, Democratic Republic of the Congo, Kenya, Rwanda, Tanzania, Uganda, and Zambia. Its natural habitat is swamps. It is threatened by habitat loss.
Grauer's warbler is a species of Old World warbler in the family Acrocephalidae.
The Grande Comore brush warbler is a species of Old World warbler in the family Acrocephalidae. It is found in Comoros and Mayotte. Its natural habitat is subtropical or tropical moist montane forests.
Nesillas is a genus of Old World warbler in the family Acrocephalidae. Established by Harry Church Oberholser in 1899, it contains the following species:
The subdesert brush warbler, also known as Lantz's brush-warbler, is a species of Old World warbler in the family Acrocephalidae. It is found only in Madagascar.
The Moheli brush warbler is a species of Old World warbler in the family Acrocephalidae. It is found only in Comoros. Its natural habitat is subtropical or tropical moist montane forests.
The Malagasy brush warbler, also known as the Madagascar brush-warbler, is a species of Old World warbler in the family Acrocephalidae. It is found in Comoros and Madagascar. Its natural habitats are subtropical or tropical dry forests, subtropical or tropical moist lowland forests, and subtropical or tropical moist shrubland.
Whistler's warbler is a species of leaf warbler. It was formerly included in the "Old World warbler" assemblage.
The chestnut-headed tesia is a small insectivorous songbird formerly of the "Old World warbler" family but nowadays placed in the bush warbler family (Cettiidae).
The Samoan fantail is a species of bird in the family Rhipiduridae. It is endemic to Samoa and is found in Upolu and Savaiʻi islands.
