I hope someone can offer some advice since I'm a newbie. I have 3 Easter Eggers (4 1/2weeks) and 2 GL Wyandottes (3 1/2weeks). I added the GLWs 2 weeks ago after we gave our little crossbeak EE to our vet. I wanted more than 3 hens and was told these would be generally friendly. They didn't mix well but no huge problems until last weekend. I found our sweet Daisy with a bloody backend, no tail feathers and the GLWs had bloody beaks. I removed her to a seperate brooder and treated her wounds. Next morning, same thing with a different EE. She's recooping nicely in another brooder. The 3rd EE, which is more aggressive, started attacking and pulling feathers off a GLW so now they're all seperated. I've tried to put the GLWs back together but they attack each other (one pulled a blood feather and created a new wound) and the 3rd EE attacks both GLW and other EEs. It's a huge mess! Before this happened, I noticed in weeks past the aggressive EE was pulling downy feathers off the others so introduced protein - boiled mashed eggs and sunflower seeds. I added a perch and mealworms so they could scratch around. My brooder is a fair size so don't think it's too crowded. I can't be sure the EE didn't start this and the GLWs took advantage. How can I make them stop attacking each other and how to make the EE stop pulling feathers? Are these 2 different issues? Do I need to give away the GLWs? Thanks for any insight!