Thanks Pat and Joel. I am guessing I was about 40 yards away... I cropped this shot a bit to make up the difference. I get my tips from a local email hotline for birders, and there have been a fair number of snowy sightings in the area. So I was anticipating success. Strangely enough, another vehicle ahead of me drove right past this bird and didn't even notice..! But maybe, unlike me, they were actually paying attention to the road.