Old World warblers are a large group of birds formerly grouped together in the bird family Sylviidae. They are not closely related to the New World warblers. The family held over 400 species in over 70 genera, and were the source of much taxonomic confusion. Two families were split out initially, the cisticolas into Cisticolidae and the kinglets into Regulidae. In the past ten years they have been the subject of much research and many species are now placed into other families, including the Acrocephalidae, Cettiidae, Phylloscopidae, and Megaluridae. In addition some species have been moved into existing families or have not yet had their placement fully resolved. A smaller number of warblers, together with some babblers formerly placed in the family Timaliidae and the parrotbills, are retained in a much smaller family Sylviidae.
Pallas's leaf warbler or Pallas's warbler, is a bird that breeds in mountain forests from southern Siberia east to northern Mongolia and northeast China. It is named for German zoologist Peter Simon Pallas, who first formally described it. This leaf warbler is strongly migratory, wintering mainly in south China and adjacent areas of southeast Asia, although in recent decades increasing numbers have been found in Europe in autumn.
The wrentit is a small bird that lives in chaparral, oak woodlands, and bushland on the western coast of North America. It is the only species in the genus Chamaea.
The ashy-throated parrotbill is a parrotbill. In old sources, it may be called Alphonse's crow-tit; though superficially resembling a tit it is not a member of the Paridae. The native range of this species extends from south-west China to northern Vietnam, and it might have become naturalised in one area in Italy.
The Taiwan bush warbler is a species of Old World warbler in the family Locustellidae. It is found only in Taiwan. Its natural habitat is undergrowth and grassland 1,200–3,000 m (3,900–9,800 ft) in elevation. It was first recorded in 1917 and named as a distinct species in 2000. The International Union for Conservation of Nature (IUCN) has assessed it as a least-concern species.
The Manchurian bush warbler, also known as Korean bush warbler, is a bird in the family Cettiidae. The species was first described by Robert Swinhoe in 1860. It is found in northeastern China.
The Indian grassbird is a passerine bird in the family Pellorneidae. It was formerly placed in the Old World warbler family, Sylviidae, and the Old World babbler family, Timaliidae.
Layard's warbler or Layard's tit-babbler, is a species of Old World warbler in the family Sylviidae. It is found in Lesotho, Namibia, and South Africa. Its natural habitat is subtropical or tropical dry shrubland.
The rufous-tailed babbler is a bird species in the family Paradoxornithidae. As with many other species known as "babblers", it was formerly placed in the family Sylviidae. It is endemic to central China.
Dohrn's warbler, also known as Principe flycatcher-babbler, Dohrn's flycatcher, Dohrn's thrush-babbler, is a species of passerine bird in the family Sylviidae that is endemic to the island of Príncipe which lies off the west coast of Africa in the Gulf of Guinea.
The fire-tailed myzornis is a species of bird. Its genus Myzornis is monotypic, and has recently been placed in the family Paradoxornithidae.
The Cordillera ground warbler, also known as Rabor's wren-babbler or the Luzon wren-babbler, is a species of bird currently placed in the family Locustellidae. It is endemic to the Philippines, where it is found in northwest Luzon in the foothills of the Cordillera Mountain Range. Some taxonomists continue to list the species in the Timaliidae, others in the Pellorneidae. Its natural habitat is tropical moist lowland forests. It is threatened by habitat loss.
Pnoepyga is a genus of passerines endemic to southern and southeastern Asia. Its members are known as cupwings or wren-babblers. The genus contains four species. The genus has long been placed in the babbler family Timaliidae. A 2009 study of the DNA of the families Timaliidae and the Old World warblers (Sylviidae) found no support for the placement of the genus in either family, prompting the authors to erect a new monogeneric family, the Pnoepygidae.
Rhopophilus is a genus of songbirds in the family Paradoxornithidae.
The Bagobo babbler or Bagobo robin is a monotypic species of bird with its taxonomy undergoing numerous changes and is currently classified as Muscicapidae or an old world flycatcher. It is endemic to the Philippines only found in Mindanao.
Sylvioidea is a superfamily of passerine birds, one of at least three major clades within the Passerida along with the Muscicapoidea and Passeroidea. It contains about 1300 species including the Old World warblers, Old World babblers, swallows, larks and bulbuls. Members of the clade are found worldwide, but fewer species are present in the Americas.
The Bicol ground warbler is a species of passerine bird in the family Locustellidae. It is endemic to the island of Luzon in the Philippines, where it is found in the southern parts of the island. Along with its other conspecifics, such as the Cordillera ground warbler and the Sierra Madre ground warbler, it is one of the most elusive birds in the country. Its natural habitat is tropical moist lowland forest. It is threatened by habitat loss.
The Chinese grassbird is a bird species in the family Pellorneidae. It was formerly placed in the Old World warbler family Sylviidae and the babbler family Timaliidae.
The Tarim babbler, also known as the Tarim hill warbler is a species of bird in the genus Rhopophilus. It is now thought to be a close relative of the parrotbills and is placed in the family Paradoxornithidae; previously, it was placed in the families Cisticolidae, Timaliidae or Sylviidae. It is endemic to China.
