This fellow appeared in our yard 2 or 3 weeks ago.
The first time I saw him (or her), I tried to get a photo. He disappeared before I could get my camera. Although I kept watch, I didn't see him again for over a week. I was beginning to think I had imagined him, until my neighbor mentioned that he had seen him, too. I see him almost every day now.
It is difficult to see from the photo, but he has pink eyes and pink ears, much like a domestic rabbit. The difference is in the shape of his head - and his wiliness. By all accounts, he should not have lived this long. Maybe the neighborhood predators are stuffed with the surplus crop of chipmunks this year.