When the jelly wears off, just re-apply it. It is possible to control what kinds of birds visit your feeder by the types of seeds you offer. Different varieties of birds eat different varieties of seeds. In addition to wild berries and commercially prepared foods, sunflower seeds are the most popular. Many birds also like seeds from watermelons, squash and pumpkins.
Some grains used in mixes like oats, wheat, flax, buckwheat, and corn are less popular.
Try to limit the feed to one type of food. Additional birdfeeders can be put up if you want to have a variety of different seeds. Always keep the feeder tray full or the birds will begin to look for another source of food elsewhere and will quit visiting. If you start feeding in the winter months, keep it up the entire winter. Once they become dependent upon your help, it is difficult for them to locate food on their own.