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Common merganser drake primaryPhoto: Tom Koerner/USFWS
Diver

Common Merganser

Mergus merganser

Alternate names: Goosander, Sawbill

Length
25.5 in
Weight
2.5 lb

Overview

The common merganser is a large, streamlined diving duck, easily identifiable by its long, thin, serrated orange bill designed for catching fish. Males are striking with their dark green heads, white bodies, and black backs, while females have gray bodies and reddish-brown crested heads. Both sexes share the slender “sawbill” characteristic of mergansers.

Found in large lakes, rivers, and coastal bays, common mergansers are excellent swimmers and divers, often seen foraging for fish underwater, making them a prized species for hunters targeting waterfowl in colder, northern habitats.

Identification

Common merganser drake primary
DrakePhoto: Tom Koerner/USFWS
Common merganser hen primary
HenPhoto: Putneypics

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Thin serrated orange bill, dark green head (male), reddish-brown crested head (female), large size, fish-eating habits, excellent diving skills

Drake

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Hen

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Range

Common merganser range map
Hunting-season range

In the Field

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