This is one of our new cats "Wash" - we picked him and "Tara" up from the RSPCA on Saturday afternoon and since then the pair of them have been holed up behind the sofa. We haven't heard a peep from either of them. They sneak out and eat/poo while we're asleep and are probably having a little party now while we're at work.
No decent picture of Tara as yet as she just backs away anytime anyone comes close to her. I suspect it'll be a day or two before we see anything of either of them