Common Merganser
Mergus merganser
Migratory in northern range Northern forested habitats near large la… Common Resident Courtship Call
Learn to identify the Common Merganser by ear. Master the "none" phrase and tell it apart from similar species.
“none”
What the Common Merganser sounds like
Common Mergansers are streamlined ducks that float gracefully down small rivers or shallow shorelines. The males are striking with clean white bodies, dark green heads, and a slender, serrated red bill. The elegant gray-bodied females have rich, cinnamon heads with a short crest.
“none”
How to tell it apart
Listen for:Males make harsh croaking sounds during courtship displays in spring. Often written as “none”.
Don't confuse with:The Red-breasted Merganser — shaggy, double-pointed crest
Where you'll hear it
Northern forested habitats near large lakes and rivers for breeding; large lakes, rivers, and reservoirs in winter.
Most active during daylight hours, foraging in clear waters where they can spot prey.
Similar species
Common Merganser song FAQ
What does a Common Merganser sound like?
Males make harsh croaking sounds during courtship displays in spring. Listen for the "none" phrase.
How do I tell a Common Merganser from a Red-breasted Merganser by sound?
Red-breasted Merganser: Shaggy, double-pointed crest; Males have reddish-brown breast band with black spots; More often found in saltwater habitats.
When is the best time to hear a Common Merganser?
Most active during daylight hours, foraging in clear waters where they can spot prey.