Squirrel Proof Bird Feeder
Some bird feeders try to solve this problem by using plastic shields on the sides to keep the seeds in. There are some problems with this method of making squirrel proof bird feeders. The side pieces will keep the squirrel from eating huge piles of seeds. But what they learn to do is to fly at the feeder, knocking a bunch of seeds to the ground as they go. Then, when they fall, moments later, they have a meal waiting for them. Some of the smarter ones get very good at this and learn to take a flying leap that spills large quantities of seeds. If this becomes too much of a problem, there are other alternatives. One is buying a more expensive feeder that has been made squirrel proof by the manufactures.