I live in Oregon and have not been able to figure out how or if Blackhead is endemic in my area. I see turkeys and chickens together at many of the farms I pass everyday. So I am wondering how many people keep them together and how many people do not. Will a de-worming schedule prevent it? Are there natural de-wormers out there for poultry? We recently got a 2 year old turkey. He was living with chickens when I bought him. I'd like to get a couple chickens and I'm trying to decide on coop design..keeping them separate or together.