Titmouse Feeder - A Suet Cake Container for Feeding Birds

Recently my wife asked me if I had some idea how to prevent the crow birds from stealing the suet cakes that she usually hangs on the trees to feed the titmice and other small birds during the winter season...

So the goal of this project was to create a container for suet cakes (or fat balls) for feeding titmice and other small birds during the winter. The container should be strong enough to prevent larger birds to "steal" an entire fat ball and fly away with it.

The feeder consists of a