March 2010 – vol. 103, issue 3, pp 142–183 Abstract This paper deals with the identification of the Caspian Gull Larus cachinnans. The aim is to synthesise what is currently known about the identification of this species and discuss the appearance of proven and suspected hybrids. The paper is split into two parts. Part 1 deals with the identification of typical cachinnans and their separation from Herring L. argentatus and Yellow-legged L.... This article is only available to registered users.To read more, please log in or purchase a subscription.