I'm a first time chicken owner and I currently have two Rhode island reds, one barred rock, and one what I assume is an amerucana bantam though I could be wrong.( When we bought her she was just called a bantam chick) I'm worried about the bantam because it's starting to get cold and she's really small. I don't know if she'll be able to handle winter or if this is the normal size for her breed. Here are some pics of her. She's also stated brooding for some reason and is spending most of her days in the coop. I've been letting her do it since a hawk has starting hunting the flock and she's the perfect size for a snack. I just want to know if she's healthy and if not what should I do. My chickens are my pets so I want to give them the best life I can. Any help is appreciated. Thank you!