Japanese Marsh Warbler Locustella pryeri wintering in the Chugoku and Shikoku regions, western Japan

Abstract

A survey of wintering Japanese Marsh Warblers Locustella pryeri was conducted at 107 wet-grasslands in the Chugoku and Shikoku regions of western Japan during the winter of 2022–2023. Ten individuals were widely found at five sites. Abandoned rice fields were the most important wintering habitats. Almost all warblers were found in wet-grasslands with Common Reed Phragmites australis less than approximately 2 m in height and with abundant understory.