September 2015 – vol. 108, issue 9, pp 540–544 The Carl Zeiss Award is awarded for the best rarity submission of the year. This year's winner is Martin Perrow's submission of an Isabelline Wheatear on Blakeney Point, Norfolk, in September 2014. This bird was actually an extremely difficult one to identify, and ultimately the Committee found the record not proven. However, Martin's submission adds greatly to our knowledge of this potentially trick... This article is only available to registered users.To read more, please log in or purchase a subscription.