We do feed the birds - we have a five-prong bird feeder to which DH has fitted a squirrel-proof umbrella-type thingy. We've never had any problem with rats or mice, the pigeon with a dodgy wing that has adopted our garden makes sure that any dropped seeds etc. are hoovered up. This morning we had goldfinches, coal tits, blue tits, robins and - new to us - two nuthatches, who are mad for sunflower hearts. We've had jays too, and two sorts of woodpecker.
We are currently also feeding a single red kite, who first came and sat in our beech tree about 5 years ago when it was a very young bird. It disappeared for a long time but this year has come back, sitting on exactly the same branch and exhibiting the same behaviour, so we are pretty sure it's the same bird. There aren't any others around just now, but they are a glorious sight to see.