Abstract Litwiniak et al. (2021) detailed the breeding-range expansion of the Caspian Gull Larus cachinnans in Europe. The paper concluded by saying that: ‘The Caspian Gull is an easy-to-study bird, and we can continue to follow its expansion in Europe in real time.’ Since that paper was written, the species has continued to increase and extend its range in Europe. In


Stay at the forefront of British birding by taking out a subscription to British Birds.

Subscribe Now