Migratory Birds of the Great Lakes University of Wisconsin Sea Grant Institute
 about habitat birds + science 20 birds
aerialist raptors
copyright UW Sea Grant, writer: L. Wiland, design: T. Yao contact us credits

Common Merganser — Field ID

Size: 21"-28"

Wing span: 34"

Weight: 2-4.7 lbs.

Color: As is common in many bird species, male and female Common Mergansers exhibit different coloring. The male’s smooth, dark metallic green head, red bill, dark back, and white breast and belly are striking. By contrast, the smaller female has a chestnut-colored head with a small crest, an orange bill, and a grayish back and flanks. Juveniles resemble adult females.

ML Reeb writer: Laurence Wiland design: T. Yao