National Geographic : 1934 Oct
© National Geographic' Society THE MERGANSER'S BILL IS EDGED WITH SAWTEETH SO THE BIG ONES WON'T GET AWAY Even during a New England winter " sawbills " may be seen, swimming and diving for fish in the cold open stretches of arapid stream. They usually nest in hollow trees. Rivers and other inland waters are frequented by the American merganser (left foreground, drake and hen). The beautiful hooded merganser, on the dead limb with his mate, likes small ponds. Both seacoasts and inland waters arevisited byred breasted mergansers, pair swimming and drake in swift flight.