Only one that will peck me is Momma when she has babies. OH BOY if I get near them she will grab hold of my skin so hard you can hear the "click" of her beak clicking back together when I pull loose. She's left bruises. But that's the only time and I do nothing but try to avoid it cause she's just doing her job then. None of the rest do, ever. But if they are on the nest the look like they will. I have another that is aggressive to me from time to time but backs off pretty quick.