The design of the Single Cake Suet Holder couldn't be simpler: It's a wire cage built to house a single cake of suet to feed perching birds in the winter. The top is hinged to allow for easy refilling, and it is suspended by a single chain with a hook at the end that can fit over most tree branches. Within an hour of putting one out at the farm, we had a steady stream of juncos and chickadees, and now we seem to have a huge population of these tiny birds. You can also expect to see hairy woodpeckers, nuthatches, and flickers visit the feeding station. One suet cake lasts about one week. This holder is available in red, blue, or green.