Female Common Mergansers can be seperated from the closely related Red-breasted Mergansers by the clean divide between the red of the head and the pale breast [September; Park Point, Duluth, Minnesota]
A female Common Merganser rests in the bay [December; Park Point, Duluth, Minnesota]
Common Merganser [April; Lake Superior Park Point, Duluth, Minnesota]
Also called the "sawbill," Common Mergansers use their serrated bill for catching and holding fish [July; Park Point, Duluth, Minnesota]
Common Merganser [April; Perch Lake Fond du Lac, Duluth, Minnesota]