I was thinking it looks like he eats really well ;) It's really sweet of you to take care of the wild ones. I feed 2 feral cats, 8 crows, hummingbirds when in season, and have an old dog I took in as a stray when he was a puppy. There used to be a squirrel with white ears that would come up to the window in front of my dog just to get on his nerves. The feral cats are very savvy - I wouldn't put it past them to be able to get a squirrel. Funny creatures!