The genus Chaetornis is possible monotypic taxon with a single species - Bristled grassbird
The bristled grassbird (Schoenicola striatus) is a small passerine bird in the genus Schoenicola. Also known as the bristled grass warbler, this species is endemic to the Indian subcontinent, where it is patchily distributed in Bangladesh, India, Nepal and Pakistan. These insectivorous birds skulk in dense and tall grasslands, often in marshy areas, habitats that are threatened by human activities. Formerly considered to be sedentary, the species may be migratory, moving south and east in the Indian peninsula during winter and returning to their breeding grounds in the northern plains south of the Himalayas.
The habitat in which the species occurs is tall grass-covered marshlands. The distribution range is mainly in the northern part of the Indian Subcontinent. Formerly described as common in at least Gujarat, Andhra Pradesh, West Bengal, Orissa, Lahore (where they bred in the Rakh area parts of Bangladesh, and Nepal. The species is threatened by the destruction of grassland and marshland habitats. The species was thought to be mainly sedentary with movements related to the rains but they may be migratory, breeding along the riverine plains south of the Himalayas and wintering further east and south in the peninsula of India.