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Title
British Ornithologists' Union Records Committee ( BOURC): 47th Report (October 2017).
Abstract
The article presents the reports from British Ornithologists' Union which covers the period from September 2016 to August 2017. Topics mention including the Acadian flycatcher Empidonax virescens which is added to the category A, Sylvia cantillans cantillans and Mugimaki flycatcher Ficedula mugimaki which retain in category D.