Have you guys across the pond read about squirrel meat being consumed as a good source of protein? There's plenty of road kill laying around all over the streets here should you need a good source.
I've eaten Squirrel, it's quite similar to chicken but has a slightly richer flavour. You don't get much meat from one, but if you're out in the woods and one lands in your frying pan you'd be a fool to waste it :)
Grey Squirrels in the UK are not native and are the cause of our native Red Squirrel becoming endangered so by eating a Grey Squirrel in the UK you are doing nature a favour :)