What a wonderful idea!
In the 1990s we had a holiday in Norfolk - the home of the Battery hen
By the roadside we saw two hens, obviously the so called "spent hens". We were terribly worried that they might end up in the road so we decided to stop and help them. Both were nearly bald and had burns on their legs from being kept penned up in their own waste ...
My daughter is brilliant with animals and birds and managed to catch both. We then had the problem of what to do with them .... For a start we had nothing in the car to contain them. Both chickens ended up sitting on my daughters lap! They were amazingly well behaved. By the time we were back where we were staying, they (the hens) were "Henrietta" and "Libby"
By chance, we were staying where the owner of the property actually kept hens. She had a spare pen, and they went into that. Later, they were moved to a better location, after a vet visit.
Both hens regrew their feathers and began laying again ..... If only we could hve helped their poor beaks
I wish we had room for some here, but I think the neighbours might complain about hens on the balcony
..... (its a shared garden as we are in a block of flats)