ABSTRACT The BOURC Taxonomic Sub-committee (TSC) recently published recommendations for the taxonomy of the Herring Gull and Lesser Black-backed Gull complex (Sangster et al. 2007). Six species were recognised: Herring Gull Larus argentatus, Lesser Black-backed Gull L. fuscus, Caspian Gull L. cachinnans,Yellow-legged Gull L. michahellis, Armenian Gull L. armenicus and American Herring Gull L. smit

...

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

Subscribe Now