Ferals learn about home comforts REAL quick!
I have a lady on my books who had lots of ferals around her stables living underneath her office/caravan. Once they've been caught and done we return them and they gradually become a lot tamer. When she arrives now in the morning, all the cats that we've done so far now line up in front of her calor gas fire throwing moodies until she switches it on.
Sometimes up to 8 cats all lined up in a row giving her the evil eye, she says, like a Hitchcock film. One even bangs the side of it with his paw!