Your bird feeder is offering free food. These might include Starlings, House Sparrows, Grackles, Crows, Blue Jays or Sharp-shinned Hawks. Other birdfeeders attract pests like raccoons, mice and rats, or deer. Keep birdseed off the ground Stop feeding certain foods for a while Change the type of bird feeder you use Move your feeders to a new location Stop feeding completely for a week Keep the area under the feeders clean and free of seeds.
Birds spill a lot of seed.
This can attract mice and rats. Larger birds can be deterred by enclosing your feeders in a cage. The smaller birds can get through the narrow openings and eat. The larger birds are kept out. This should also prevent deer from eating your birdseed.