Who doesn't like feeding the birds? These bird feeders may be filled with unsalted peanuts in the shell, sunflower seeds or suet. These type of feeders attract any kind of bird that likes to "cling" to the feeder to eat. We get black capped chickadees, tufted titmouse, phoebes, every kind of woodpecker, blue jays and so on. They peck the meat out and then you are left with the empty peanut shells. Dump them out and start again.