Here is a photo of my troops with the same chicks when they spent a day with Grandma and Grandpa. My sister has been having some problems with the chickens pecking each other. She has tried several different things and finally just had to separate them.
I think she has 3 different types of chickens and they don't seem to like each other. If anyone has advice I can pass it on. I know nothing about chickens except they taste good battered and fried.