Thanks, but now I'm feeling I didn't do as well as I thought taking care of those hens.Nine and ten years old are respectable ages.
When I started out with chickens healthy free rangers were expected to live to ten to twelve years for full sized and 12 to 14 years for bantams.

I just used this site for research in those days (only started socializing here during the pandemic), and respected longtime members were talking about nursing along 8-10 year old hens that had trouble seeing or walking or were always getting egg bound. I had none of those troubles so I thought I must be doing something right.
Granted, bantam cochins are pretty far from a wild-type or game-type free ranger. They were very short and round, though I don't think they were obese. I sometimes wonder if the air quality here was a problem, though I paid special attention to their breathing on smoggy days (canary in the gold mine deal). But we did have a bad fire season that year the two died at 10. They might have had even longer lives otherwise.
