Abstract
This paper describes BBRC’s current approach to vagrant forms of the Yellow Wagtail Motacilla flava in Britain, and includes examples of recent records from the Rarities Committee’s files. Its purpose is to assist observers faced with putative vagrant Yellow Wagtails, helping them to focus on key features and to record sufficient information to confirm the identification. Potential aspects for further study that would enable improved understanding of the identification of these forms are also included.