The Dartford Warbler is an elusive, attractive, interesting and rare breeding bird in the UK. It is non-migratory and it's success as a breeding bird depends on a mild winter because it is right on  the Northern edge of it's breeding range here in England. This is a common bird however in parts of Spain and the Mediterranean where frosts and cold winters are unknown.  I am not going to even hint at where this photograph was taken, I am not that irresponsible except to say that it was photographed from a very popular public footpath.