Compost King
Free Ranging
And don't forget the scratching, and certain breeds scratch up carbon based bedding type of materials into dust rapidly, others are not so great at it. Leghorns or leghorn based hybrids used in Battery Cages are actually some of the best compost turning birds available. Great foragers too, they can survive finding their own food if their range is big enough. I do believe they have value as spent hens. I am not the type to just rescue a bird just to make myself feel better, The bird has to bring value and I can see the value in spent leghorns.I always forget the manure part is important to some people. That's something every bird can do