Is Cameron to blame for songbird decline?

I'm not the worlds greatest ornithologist and the nearest I come to twitching is when her indoors raises her voice, but I do enjoy watching birds and do my best to encourage them into the garden. The past couple of winters we have been visited by large numbers of migratory blackbirds that apparently come over from Germany. So far this year these welcome Teutonic versions of turdus merula have not been seen at all. This could be due to the mild autumn, not putting the right food out for them (bratwurst and sauerkraut?) or possible them getting the knock about the increasing anti-European sentiment that is being whipped up over here. Is this avian mystery something else that we can blame Cameron for?