Fruit_eating birds, such as pine grosbeaks and Bohemian waxwings, are rarely attracted to feeders, but when snow covers most natural berries, wild cranberries, blueberries, or dogwood berries occasionally attract these colorful species to a feeder. Gray jays, Steller's jays, black_billed magpies and common ravens eat a wide variety of foods. Sliced apple halves and leftover table scraps may divert their attention from the suet long enough to give smaller birds a chance. Be careful not to give moldy food to birds, however, as it may cause illness or death.
Don't overcrowd an area with nest boxes. Most cavity_nesting birds defend territories, so don't overcrowd an area with nest boxes for a single species. Usually, nest boxes should be placed 50 feet or more apart. Swallows, however, will tolerate neighbors and will sometimes nest in “apartment” birdhouses. Build your nest box so that it is easily maintained: Construct the birdhouse with a roof or floor that can be easily removed so that you can reach inside to clean it. Maintain your nestboxes: Nest boxes should be cleaned out each spring and disinfected to prevent the spread of avian diseases. Be sure to dry the inside and (if necessary) add fresh, dry sawdust or woodchips.