Large-billed Reed Warbler
Photo: Pavel Kvartalnov · CC BY-SA 3.0

Reed Warblers and Allies

Large-billed Reed Warbler

Acrocephalus orinus

LCLeast Concern
Family
Reed Warblers and Allies (Acrocephalidae)
Order
Passeriformes

Overview

The large-billed reed warbler (Acrocephalus orinus) is an Old World warbler in the genus Acrocephalus. The species has been dubbed as "the world's least known bird". It was known from a single specimen collected in India in 1867 and rediscovered in the wild in Thailand in 2006. The identity of the bird caught in Thailand was established by matching DNA sequences extracted from feathers; the bird was released.

Summary from Wikipedia, available under CC BY-SA 4.0.

Range and habitat

Breeds southeastern Kazakhstan, northeastern Afghanistan; winters Myanmar, Thailand; long known only from one 1867 specimen from northern India, distribution still poorly known.

Range description: AviList Global Avian Checklist.

Continents

Sources and further reading

Last updated September 29, 2026.