One winter, I saw a bird scratching around trying to find food in the snow. I felt sorry for it, so bought a bird feeder. Over the next few years, I kept putting up bird feeders--until I realized that my yard had far more birds (and guano) than was natural. Feeding them is like giving out welfare handouts--it does not really help them, it makes them dependent on handouts, and there is no end of takers. So I stopped feeding them.
You put out feeders to attract birds because you enjoy looking at them, not as some form of avian food stamps.
If you over fed and put out too many feeders the problem and fault was yours. If you fed out of sypathy the mistake was yours as well. Wrong motivation and application it’s just as well that youre not feeding them anymore.