I have a hen, she was supposed to be a green egger. Wellsummer/Aracana cross. She lays blue eggs, who cares right, and is a sizeable hen. She started laying about 10 days ago and since then has become a complete hag to put it nicely. She is tearing up four of my other hens and I caught her literally digging a hole in the back of one of them last night. She pretty much just walks around stalking the others. Picking at their backs and legs as they walk away from her. I confined her but wonder why she would become such a _____ after she started laying. Three of the other hens are laying, one is a Black Australorp, two BLRW, and the other is the sister of the now mean one. The sister is the one she had trapped behind a straw bale and was repeatedly pecking at one spot on her back that was raw and bloody. Now the hen that was being attack by her has had a rough life here. First attacked by a HUGE red tail hawk and got away, then managed somehow to escape the pen and attacked 3 times by our malamute before getting to shelter. She's looking at bit rough but a tough girl for sure! So, back to the topic, why would the one start acting like that when she started laying?