Most of my hens are 4 years old or abit older. I've had them since day old hatchery chicks; raised them, fed and watered them, seen them through snake and hawk attacks, a possum or two, record heat and cold, through the parasite routine, 3 tropical storms and a few other things I cant think of right now. Several of them still jump up on my lap when I sit out in the backyard in a lawn chair, they're expecting a gentle neck rub. They follow me around everywhere in the yard. I still get some eggs from them about every other day. My decision is simple, even if they stop laying altogether...they'll be here for a long time to come.