Plectrophenax nivali

tags: Snow Bunting, Plectrophenax nivali, birds, mystery bird, bird ID quiz [Mystery bird] Snow Bunting, Plectrophenax nivali, photographed in Minnehaha County, South Dakota. [I will identify this bird for you tomorrow] Image: Terry Sohl, 19 January 2009 [larger view]. Photo taken with Canon 50D, 400 5.6L lens. Please name at least one field mark that supports your identification. Rick Wright, Managing Director of WINGS Birding Tours Worldwide, writes: The angled commissure of emberizid buntings always makes them look like they're smiling, don't you think? The bright white plumage, pale…