I have seen squirrels kill baby birds, I would rather not see them around my chicks. My biggest fear with squirrels is fleas. Rat fleas carry bubonic plague - squirrels are nothing but furry tailed tree rats. Therefore, they are not welcome at my home. The snake is welcome, though. I don't like rodents anywhere on my place and just found a flock (pack, pod, whatever)of mice in my shed - ick!