"3. Long, productive outdoor lifespan. Heritage Chicken must have the genetic ability to live a long, vigorous life and thrive in the rigors of pasture-based, outdoor production systems. Breeding hens should be productive for 5-7 years and roosters for 3-5 years."
Of course the SOP is the most important aspect of the Heritage Breed Definition, but not the only one. For me its more than just preserving the chicken, but the manner in how it is kept, as well. I know I am in the minority on this and I respect that. I hope the previous discussion on forage and cover crops would be considerate appropriate on the Farming and Homesteading with Heritage Breeds thread. There is no lack of emphasis on good breeding and the SOP on that thread, Joseph and many other see to that.
Thank you all for every thing I have learned so far.
Mark
This is a good point. I think the key is they should have the ability to do well in that environment, even if not raised in it. A lot of that is management which might be more on topic in other threads, but to stay within the focus of this thread, selecting for vigor first goes a long way towards meeting those goals. Breed from the healthiest most active birds. As they're growing mark the ones that mature the fastest and outpace the others. If you do range pay attention to the birds that are the first out the door and last ones to roost. You can see even in the brooder the chicks that run around, taking interest in any changes compared to the ones that are just kind of simply there. Make sure your breeding program doesn't allow you to get too inbred and have the line suffer from it. Bob would always post about his clan/family type breeding programs and I think that's a good idea.
More thoughts maybe later, but those are just a few of the things you can do.