The grass warblers are small passerine birds belonging to the genus Locustella. Formerly placed in the paraphyletic "Old World warbler" assemblage, they are now considered the northernmost representatives of a largely Gondwanan family, the Locustellidae.
The common grasshopper warbler is a species of Old World warbler in the grass warbler genus Locustella. It breeds across much of temperate Europe and the western Palearctic. It is migratory, wintering in north and west Africa.
The river warbler is an Old World warbler in the grass warbler genus Locustella. It breeds in eastern and central Europe, and into the western Palearctic. It is migratory, wintering in inland southern Africa, from around the Zambezi River south to the vicinity of Pretoria in South Africa. The genus name Locustella is from Latin and is a diminutive of locusta, "grasshopper". This refers to the song of the common grasshopper warbler and some others in this genus. The specific fluviatilis is Latin for "of a river".
Savi's warbler is a species of Old World warbler in the grass warbler genus Locustella. It breeds in Europe and the western Palearctic. It is migratory, wintering in northern and sub-Saharan Africa.
Gray's grasshopper warbler, also known as Gray's warbler, is a species of grass warbler in the family Locustellidae; it was formerly included in the "Old World warbler" assemblage.
The friendly bush warbler, also known as the Kinabalu friendly warbler, is a species of Old World warbler in the family Locustellidae. It is endemic to the island of Borneo.
The bamboo warbler or bamboo scrub-warbler is a species of Old World warbler in the family Locustellidae. It is found in Democratic Republic of the Congo, Ethiopia, South Sudan, Tanzania, Uganda, and Zambia. Its natural habitats are subtropical or tropical moist montane forests and subtropical or tropical moist shrubland.
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 Sulawesi bush warbler is a species of Old World warbler in the family Locustellidae. It is endemic to the island of Sulawesi in Indonesia where it is found on the forest floor.
The long-tailed bush warbler is a species of grass warbler. It was formerly included in the "Old World warbler" assemblage.
The brown bush warbler is a songbird species. Formerly placed in the "Old World warbler" assemblage as Bradypterus luteoventrus, it is now placed in the newly recognized family Locustellidae.
The long-billed bush warbler is a species of Old World warbler in the family Locustellidae. It is found in China, India, Pakistan, and Tajikistan. It is also known as long-billed grasshopper warbler.
The Benguet bush warbler, also known as the Benguet grasshopper-warbler, is a songbird species. Formerly placed in the "Old World warbler" assemblage, it is now placed in the newly recognized family Locustellidae. L. seebohmi was formerly known as russet bush warbler, but that name is now restricted to L. mandelli, formerly included in L. seebohmi as a subspecies but now considered a separate species. It is found in the mountains of northern Luzon in the Philippines.
The Chinese bush warbler is an Old World warbler in the family Locustellidae. The species was first described by Robert Swinhoe in 1871. It breeds in the East Palearctic ; it winters to Northeast India, Yunnan and Southeast Asia. Its natural habitat is temperate forests.
The spotted bush warbler is a species of Old World warbler in the family Locustellidae. It is found in the northern Himalayas, Yunnan and central China, in the countries of Bangladesh, Bhutan, China, India, Myanmar and Nepal. Its natural habitat is arboreal forests.
The russet bush warbler is a songbird species. Formerly placed in the "Old World warbler" assemblage, it is now placed in the newly recognized family Locustellidae. B. mandelli was until recently considered a subspecies of B. seebohmi, and the name "russet bush warbler" was applied to the entire species complex. After this was split up, Benguet bush warbler was proposed as a new name for B. seebohmi proper. The species is found in southeast Asia.
The Javan bush warbler is a songbird species. Formerly placed in the "Old World warbler" assemblage, it is now placed in the newly recognized family Locustellidae.
The West Himalayan bush warbler is a species of Old World warbler in the family Locustellidae. It is found in the northwestern Himalayas.
Sakhalin grasshopper warbler, is a species of grass warbler in the family Locustellidae; it was formerly included in the "Old World warbler" assemblage.
The Sichuan bush warbler lives primarily in the thick brush and on tea plantations in five mountainous provinces of central China. It is a relatively small bird with a weight of 10 grams and an average length of 13 cm. Unlike its congener the russet bush warbler, which is found in the same mountains and also in the Himalayas, Vietnam, the Philippines, and Indonesia, the Sichuan bush warbler prefers elevations below 7,500 feet. The two species shared a common ancestor about 850,000 years ago. They are distinguished by plumage and sonogram terminology – their songs. Locustella chengi emits a long buzz, followed by a shorter click, often repeated in series, and the song is in a lower frequency than its genetic cousin.
P.D. Round & V. Loskot, A reappraisal of the taxonomy of the Spotted Bush-Warbler Bradypterus thoracicus in Forktail 10 (1995): 159-172
