Common Merganser
Image: martelljordan44 (cc-by-nc)
NameCommon Merganser
Common NameCommon Merganser
Scientific NameMergus merganser
FamilyAnatidae
Wingspan (cm)87.5
Length (cm)65
Weight (g)1500
Plumage DetailsAdult males have an iridescent dark green head, a white breast and flanks, a black back, and a salmon-pink wash on the belly (often not visible). Adult females and immatures have a rusty-brown head with a shaggy crest, a distinct white chin patch, and a gray body with white underparts. Both sexes have a long, thin, serrated red bill and show large white patches on the inner wing during flight.
Vocalization / CallGenerally quiet, but can produce soft, reedy calls, especially during courtship. Females may emit a harsh, guttural 'karr-karr-karr' when alarmed or with young.
Primary Dietpiscivore
Primary Habitatslakes, rivers, ponds, estuaries, forest
Conservation Statusleast-concern
Geographic RangeWidespread across the Northern Hemisphere, breeding in northern North America, Europe, and Asia, and wintering further south in temperate regions, often on large freshwater bodies or coastal estuaries.
Identifying Featureslong, thin, serrated red bill, shaggy crest (females/immatures), iridescent dark green head and white body (males), large white wing patches visible in flight, diving behavior for fish
Description
The Common Merganser is a large diving duck with a sleek, elongated body. Males are striking with a dark green head and white body, while females and immatures have a rusty, shaggy-crested head and a gray body. They are expert fish-eaters, often seen diving in clear freshwater habitats.
