My turkeys and geese and chickens all free range together also, and I also have had no problems. There are diseases out there that turkeys can pass on to other poultry, but my personal opinion is that the scare of putting them together has been blown a little out of proportion recently. The average homesteader with descent bio-security measures in place and good animal husbandry skills will no sooner have his animals fall prey to a disease brought in by a turkey than one that came in on the soles of its owner's shoes...in my opinion only !!! Environment, feed, stress, health and general well-being, among others, all play an important role in whether or not a particular animal gets a particular disease. So again, in my opinion only, if we all practice due diligence with regards to all of our barnyard buddies, there should be no real threat to any of them. There are exceptions to this of course, and I make no attempt to include every possible scenario in my opinions.