Bird feed is expensive here, and there's a good bit of food to forage for birds. I leave the seed heads on plants etc and feed them when it gets cold, sometimes buying the fat/seed balls which I hang in the trees by the ditch. We started when there was a hard winter in 2010 and the gun club was asked to put out food in fields, I sometimes put out dripping and porridge oats on a tray if it's bitter out and I have no feed for them.