Crossbills, Distribution survey in Great Britain, 1995-2005

This dataset represents records collected between 1995 and 2005 as part of a wider study, which was then used to infer the breeding range of the Scottish Crossbill. The data were mostly collected between January and April in the years 1995-2005 when Crossbills can reasonably be assumed to be in a territory or breeding, however since the birds were only identified by calls breeding status can not be confirmed. The Scottish Crossbill was once thought to be a subspecies of either the Common Crossbill or the Parrot Crossbill but is now thought to be Britain's only endemic bird species. A full survey was also carried out in 2008. This survey was funded by the RSPB.