This goes back to the issues Shad raised about poor genetic lines & a lack of new blood & while that is true we still have to work with what is available. Without a rooster & my own breeding program I am stuck with hoping for the best with any hens I choose, as are you & Bob. We are not to blame. We can only do the best we can within the limitations of our areas. Do not blame yourself. This is the end result of generations of greed & poor flock management & unfortunately it is rife. I'm pretty sure that is how I lost Lottie on top of Covid restrictions just when I really needed a vet. Your hens have wonderful lives compared to many & that is something to be proud of.