So I have a broody japanese bantam sitting on her 5 chicks and she screams at then and gets all big and puts her wings out like shes going to attack them. I thought this was just her "yelling at her kids" until I went and checked on them when I heard screaming again and saw her pick up one of the chicks by the neck fluff and shake it around violently. Is this normal momma chicken behavior or is she trying to cull one of these chicks? I can't tell if its one she was targeting because they all look alike almost. At any rate I took the chicks away and gave them to the other Momma that is sitting on chicks that are the same age. I gave the mean momma some fertle eggs to sit on and she was pretty angry at first but seems to be settling down.