Never seen it before, but less things surprise me these days.
6 years seems like a nice ripe age! What do you feed?
I wouldn't think I would want to use an old guy for fathering chicks for too long. Seems like fertility could drop and rates of deformity may increase.Anyways, I would maybe try to keep one of his sons. Though the over throw is rarely fun to see.
Also, older animals can become grumpy as aches and pains set in.
You make good excellent points, thanks very much. I'm not sure I could handle watching an overthrow having seen a quite horrible one in the past. We thought we'd timed it all out, but, nope. There are so few chickens here, they pass on of old age, and it's nice to have a replacement hen.
I hadn't thought of aches and pains, great point. Do you know if anything safe and natural can be added to feed to help with that? They're fed pellets, hen scratch, garden vegetable leaves - kale, etc, and grass.
So far, hens can generally outmaneuver him in their house, and after the garden is harvested, everyone will head out into the orchard. Maybe the space will help.
Thanks for replying, appreciate it.