I took this photo last winter. Since then the bird has flown off to Scandinavia, hopefully bred, and returned to over-winter in the same place as last year. I found it on its return, which reminded me I really ought to post this photo!
Crossbills are characterized by the mandibles crossing at their tips, which gives the group its English name. Using their crossed mandibles for leverage, crossbills are able to efficiently separate the scales of conifer cones and extract the seeds on which they feed. Adult males tend to be red or orange in colour, and females green or yellow, but there is much variation.