This is a warbler I saw at Girdle Ness, Aberdeen today (at the Battery). It looks like a Willow Warbler, although I'm happy if someone can persuade me otherwise. Obviously it's a pretty freakish looking one though. We quite often get 'brown' looking Willow Warblers breeding around here but I've never seen one as cold as this and so completely lacking in yellow tones. Can anything be said with confidence about the subspecies involved here?