I fed birds for many years. Then about 5 years ago we started getting more and more "bully" birds like starlings, blackbirds, crows, cowbirds, and HUGE flocks of sparrows that chased away the other birds. Then deer started showing up and stood on their hind legs and knocked the birdfeeders down (even the feeders five feet from the picture window in the living room!). Possum, raccoons and squirrels were getting out of control. The squirrels were tremendously destructive.
So I quit feeding anything. On the bright side, I have a lot less animal problems in my gardens during the rest of the year now too.