My Speckled Sussex pullet is a bully, and none of us saw it coming. She's 16 weeks along with the rest of her brooder mates, and next to last in the pecking order. But her brooder mates, of course, are not the victims of her violence. Her victims are the 4 week old chicks that we have recently moved into the coop. They are enclosed in a separate pen that sits adjacent to the big girls', closed off by chicken wire, boards on the bottom, skinny fence posts, and now a large piece of cardboard due to this pullet. Normally, Pippa is the sweetest and calmest of the whole flock. She loves to talk, sit with me, and be touched. Everyone who visits wants to see Pippa first. But when the chicks are concerned, she is a whole different bird. She will squawk loudly when she sees one, at an almost deafening pitch, and stick her head through the bars if their gate is open and wait to bite one. Poor little things. It's not a tiny peck, either; one of the chicks got a good one in the throat and bled a little but thankfully was fine, and another chick Pippa got bled from the nose. Any ideas as to why she is being so hostile? Is she jealous? Does she think they're her personal tiny food supply? When the "boss" of the chick pecking order goes up to see the other pullets, they might look at her and bawk, but rarely do they peck. Even Becky, top of the pecking order, gives a light peck and a stink eye and nothing more. Pippa just waits out to hurt them. On a side note, could this have anything to do with Pippa getting closer to laying time? Her face, wattles, and comb are a bit redder than everyone elses and she is being VERY noisy. Any advice would be appreciated.