Mergus Merganser is the scientific name for the common merganser, a species of diving duck found in North America and Europe. Synonyms for Mergus Merganser include goosander, sawbill, or simply merganser. These birds are known for their vibrant plumage, with males sporting a green head, white breast, and reddish-brown body, while females have a grayish-brown head and body with a white throat. Adapted for diving, Mergus Mergansers have webbed feet and a streamlined body for swimming and catching fish underwater. Their distinctive saw-like bills are used to catch and hold onto slippery fish. These handsome ducks are a favorite among birdwatchers and nature enthusiasts.