I have a layer flock, raise broilers occasionally, and for a couple of years, have grown out a few broad-breasted turkeys. A few years ago, I raised a new batch of birds (layers) in a place that did not have poultry on it previously. I also grew out about 10 broad-breasted turkeys with this new flock, and they did great. I floor brood over deep litter under a hover. Last year, I attempted to grow out some more turkeys, in the same facility, with some chicks but also with the established layer flock. This time, all of the turkeys died but one. They suddenly died at a couple months of age, no symptoms, just would find one or two dead every day or two until only one hen was left. She is still alive, currently residing with broilers but also around the layers all the time. I had them on high-protein starter, and they had access to a nice paddock of clover once they were feathered. When they started dying, I switched to a medicated turkey feed, to no avail. All these birds roost inside, and range a 1.5 acre lot. No chickens have had any health issues at all, appear healthy, and are productive. My question: is the additional disease resistance (vs. broad breasted) of heritage-breed turkeys such that they would fit into my system (raised with chickens, both new and established, on land previously used by poultry), or do heritage breeds also pretty much require either new land or isolation from chickens? Poultry is not the focus of my farm, so I am not willing to expend the effort to establish turkey-specific facilites/foraging areas. I would like to have a few around, so if heritage breeds fit better with chickens than broad-breasted types, that would be great.