might help... http://www.downsizer.net/Articles/Wild_food/Top_Ten_Wild_Foods_to_Gather_in_Winter/
to be honest, myself and most of the folk i know concentrate on putting meat in the freezer this time of year. Pigeons, rabbits, venison, pheasant, duck, geese, woodcock, partridge.
So I can't offer any constructive advice.
Matty