I did some brief research on this the other night... I"m fond of old things, and I maintain an all heirloom/open pollinated garden, and when I add livestock, I want to do the same thing. I want the old hens- I want to keep my hens for eggs mainly, but plan to add them to the stew pot when their egg laying prime is over. I was thinking Plymouth Rocks and RIRs. Are there any REALLY old, rare breeds out there?