This series, which started in January 1983 (Brit. Birds 76: 26-28), is not intended to cover all facets of the identification of the species concerned, but only the major sources of error likely to mislead the observer in the field or the person attempting to assess the written evidence. The species concerned are mostly those which were formerly judged by the Rarities Committee, but which are now


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

Subscribe Now