Ex batts don’t live long unfortunately
Mate of mine got a dozen as a project for he and his partner while waiting for a work permit etc. They were renting a farmhouse and had a small stable and an acre or so. Got virtually no eggs for ages until the spring came round, then the whole thing went mental, 30 eggs a week minimum, sometimes up to 50.
So they started selling them from home.
And got some more chooks.
Then started with a couple of rare breeds, because it was going so well. (One of the rare breeds isn’t actually so rare anymore.) Also got the pond dredged and got a load of ducks (multiple breeds)…
The ex battery chickens used to be left to their own devices, food, roosting boxes, plenty of space, if eggs arrived it was good, if not. No biggie.
I think they got addicted
When they emigrated and sold up they had something like 200 birds.