I'm the boss.........in my yard . I decide what goes. No big raven or gray squirrel is gonna raid my Robins nest. I say My Robins because it's my yard and they are mine! Just like no neighbor dog is going to harass my chipmunks either. I know the normal order of things and the strongest survive and all that.......but not in my yard. I will look out for those who can't or haven't quite learned how to yet.... the baby bunnies, robins and chipmunks. And yes, I do give the squirrels and other random birds some food to occupy their time. Just leave all my babies alone!