Ridgway's Cackling Goose, Hillsboro, Oregon, 10 January 2012 by Greg Gillson.
Still having trouble telling Cackling Geese from Canada Geese? You'll want to revisit last year's post: Greg's white-cheeked goose rant... I mean, primer.
And don't forget this great resource (pdf): Identification Field Guide to the Geese of the Willamette Valley and Lower Columbia River by Kelly Warren for the Oregon Department of Fish and Wildlife.