This video from England says about itself:
An over-wintering Blackcap in a Bingley, West Yorkshire garden. 2007.
This weekend, birds in Dutch gardens have been counted.
The organizers say about the results; which are provisional, as today more figures will come in:
Strikingly, there is a rising tendency of birds which used to migratory to winter in the Netherlands. Blackcaps, chiffchaffs and pied wagtails this winter have been found more and more in Dutch gardens. Usually, those birds, after having bred in the Netherlands, go to southern Europe or northern Africa in order to winter. The birds seem to react to climate changes by staying here.
Also, the number of kingfishers counted is on the rise. 122 specimens were seen close to garden ponds. Last winter, that had been just 71. This is also result of a series of mild winters, in which the water did not freeze; allowing the colourful birds to fish everywhere.
The provisional National Garden Bird Top Ten 2008 species are (between brackets, the order of the count during the 2006-2007 winter):
Count in December 2008: here.