British birds (1989)

British birds (1990)

British birds (1991)

British birds (1992)

British birds (1993)

British birds (1994)

British birds (1995)

British birds (1996)

British birds (1997)

British birds (1998)

British birds (1999)

British birds (2000)

British birds (2001)

British birds (2002)

British birds (2003)

British birds (2004)

British birds (2005)

British birds (2007)

British birds (2008)

British birds (2009)

British birds (2010)

British birds (2011)

British birds (2012)

British birds (2013)

British birds (2014)

British birds (2015)

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Bulletin - United States National Museum (G.P.O, 1960)

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Bulletin of the African Bird Club - African Bird Club. (African Bird Club, 2007)

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Bulletin of the British Ornithologists' Club - British Ornithologists' Club. (British Ornithologists' Club, 1960)