I've had 2 chickens for the last year and a half. Today, I lost one of them as a result of internal laying. My other girl seemed fine today, as if nothing was different (the one that is left was the top dog). I am wondering if I will need to get her a new friend. She really liked to pull the feathers from the other's behind so I can see her being a bit of a bully to a new hen. I believe I have a NHR or Red Star. Any hens types that don't mix with these? All suggestions are welcome!