While, eventually, squirrels will eat just about anything ... but it's also harmful to birds. Do not use Vaseline to keep squirrels off your bird feeder. Do coffee grounds repel squirrels?

Eastern gray squirrels (Sciurus carolinensis) and some species of songbirds are both preyed on by red-tailed hawks. A study released September 4 in PLOS ONE suggests that squirrels modify their ...