Your coop is good enough for 10-15 chickens.But seriously I think you should get a friend for this guy.At least a chicken not a turkey if you cant get one.
It will be fine.I dont think that the other one killed it.You now turkeys are suicidal.They will prefer to die than living in a not good environment(no offense).For him it might not be the best you know.
Also What's up with your avatar it creeps me out