By Rob Clements, Marcus Ward and Russell Wynn
Abstract A marked surge in the number of breeding Firecrests Regulus ignicapilla since 2000 is apparent in some parts of southern England. Intensive survey work in a large study area in the New Forest shows that number of pairs/singing males rose from 104 in 2009 to 498 in 2016. Based on this, further survey work elsewhere in Hampshire, data from the Rare Breeding Birds Panel archive and current knowledge of the species in other key counties, we suggest that the current British population is probably in excess of 4,000 pairs/singing males. The apparent increase in overwintering is discussed as a potential factor contributing to the rapid growth in breeding birds. Guidance for Firecrest surveyors is provided.
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