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Common Merganser

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description Common Merganser Overview

The Common Merganser (Mergus merganser) is a large fish-eating duck found across the Northern Hemisphere, known as the goosander in Eurasia. The species is easily recognized by its long, slender profile and a specialized, serrated red bill evolved specifically for catching and gripping aquatic prey. Adult males display a dark green head and predominantly white body, whereas females feature a rusty brown head and gray body. It typically breeds in forested areas near freshwater rivers and lakes, nesting in large tree cavities.

help Common Merganser FAQ

What does a male Common Merganser look like?

The male Common Merganser is easily recognizable by its striking dark green head and bright red bill. It is a large diving duck with a mostly white body and black back.

Where do Common Mergansers build their nests?

Common Mergansers are unique among ducks because they build their nests in tree cavities. They often use old woodpecker holes high above the ground near rivers or lakes.

What do Common Mergansers eat?

As their nickname sawbill suggests, Common Mergansers are specialized fish-eating ducks. They use their serrated bills to hunt and grip slippery prey like fish underwater.

Where can I find Common Mergansers in the wild?

Common Mergansers are found across the Northern Hemisphere, inhabiting freshwater rivers and lakes in North America, Europe, and Asia. They prefer clean, clear water where they can visually hunt for fish.

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