My hen had 2 chicks 8 weeks ago and she has been a great mum, well she had been up until last week. I have been watching her closely for the last few days as she is being very nasty to the chicks, she is chasing them and pecking them all day. And its not because they are going to her, they might be strolling around and she just runs up to them pecks and chases them. Why has she turned on them? I am worried as i have 7 chicks that i am getting ready to integrate with this hen and the other 2 chicks, she is already trying her hardest to get to the other chicks that are in a seperate run with in her run. Any ideas on how to deal with her?