3/4 Of my chickens are dead. RIP Peep, Zelda, and unnamed little black chick. She scratched my dogs nose up pretty bad though, which doesn't surprise me. Even as a chick she would show agression. Not a roo, but she sure acted like one. Long story short, either she got out or he got in, but he came in with a large scratch on his nose, so we went outside to investigate. We found part of the coop broken, and while Rita was chilling inside my mom found Peep dead. I didn't see her because my mom made us (my brother and I) go inside imedeatley when she found her. Anyways, the body is gone and theres no more blood, but there are feathers everywhere... Currently we shut the dogs inside and shut Rita into the part of the coop that didn't break. My mom's out buying the supplies to fix it as we speak. I know my brother would really like to adopt a new one, and I've heard that chickens do best with other chickens, so we were thinking about adopting a new one. Rita is a few months old, around 2 - 2 1/2, and there are many people selling hens a few months older than her. I know that with many animals, such as my guinea pigs, you have to introduce them carefully so to make sure they don't fight and stuff. I'm not sure how it is with chickens, but I'm sure just throwing a random new hen into the coop with Rita can't be that great of an idea. How would I do this properly, to make sure they don't fight? If it's relevent, Rita is a speckled sussex.