He he, this thread was being moved form one forum to another and I "lost" it. But I sent Mike a PM with another web site that said longer than that first one I cited. I had just pulled up the first hit on my google search.

By the way, during the Depression, my grandfather owned a chicken farm, they had over 25,000 chickens at one point in time. So I asked my Dad this question. His reply:

"Chickens' life span? Until the farmer gets hungry!"