I posted this a while back, but I didn't get any takers, so I thought I'd give it another go. This photo was taken in November 2007; it didn't strike me as anything more than a curiousity until I started looking into the Canada Goose subspecies split. Now I'm going through my old photos of geese, trying to make out what specific kind they all are. This one is pretty intriguing, but I can't say for sure what I have here.
My hunch is the "Giant Goose," Branta canadensis maxima. The whitish-brown "eyebrow" is a strong indicator, although in B. c. maxima the "eyebrow" tends to be entirely white and more above the bill than over the eye. When this photo was taken, this particular bird was with a small gaggle of geese, no more than 6 altogether. I don't remember it being bigger than the others (a sure characteristic for the maxima subspecies), but it was the only one with that trademark "eyebrow." Maybe it's some kind of intermediate between a "Giant" goose and an "Atlantic" or "Interior" (B. c. canadensis and B. c. interior respectively)? Any thoughts?