although of course we realize that the yellowness of a hen's leg is directly proportionate to whether or not she is in lay, and actually, a too-yellow leg is not to be desired, as it indicates a poor layer, so that's not really a good thing to look for in a hen IMO.
I'd like to hear from others on this. I have often seen and heard this but I have one Buckeye hen and one Welsummer hen that haven't seemed to have lost any leg color at all and they're both good layers. I first noticed this last year and have been eyeing them since. So I'm really wondering if genetics don't have more to do with the leg color than anything else. I've also noticed a direct correlation between skin color and leg color.
God Bless,