Suet is a high calorie food and is favored by normally insect eating birds, particularly woodpeckers. It can be put out just as it comes, or ground up and mixed with peanut butter and yellow cornmeal. This can then be packed into holes drilled in a small log and hung up from a branch. The last bird can be a nuisance by running off the other birds. To discourage the Starling there is a feeder that offers the suet upside down.
Starlings are unable to hang upside down for long.