An elegant male Harlequin Duck shows off his brilliant plumage. They are found in North America, Greenland, Iceland, Japan, and the eastern edge of Russia. The ducks can send humans a message about the state of our environment, writes contributor Mark Bradley. // Mark Bradley, Boreal Nature Photography The canaries in the cold mountain streams Back in the spring of 2005, I made my first visit to the Maligne Outflow bridge as a newly minted Jasper biologist. It was a beautiful sunny day.