The Great Northern Diver, Colymbus glacialis, "...is black above, with belts of white spots making a "chess-board" pattern; the lower surface is white, and the throat is crossed by two bands of white with longitudinal black bars, while the head and neck are black with a purplish gloss, changing to green below." "...the bill is normally black, and the feet are bluish or greenish grey." "The Great Northern Diver, has a much more restricted range, breeding in Iceland, Greenland, and the Fur Countries as far west as the Great Slave Lake..." - A. H. Evans, 1900

Great Northern Diver

The Great Northern Diver, Colymbus glacialis, "...is black above, with belts of white spots making a…