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Quick facts

Weight1.5 kg
Eggs8–11 eggs
MigrationPartialMigratory
Breeding seasonSpring–summer
Common in IcelandNo
Breeds in IcelandYes
Conservation statusViðkvæm (VU)
Best timeYear-round

About Common Merganser

The common merganser is a large fish-eating duck found on rivers, lakes and coastal waters. Males are pale-bodied with dark green heads, while females are grey with reddish-brown heads.

It is a powerful diver that feeds mainly on fish. The species breeds in Iceland in small numbers and can also be seen during winter.

Habitat

Rivers, lakes, fjords and shallow coastal waters

Diet

Fish and aquatic invertebrates.

Nesting habitat

Tree cavities and other holes near rivers and lakes.

Identification

A large elongated fish-eating duck. The male is pale with a dark green head; the female is grey with a reddish-brown head and sharply defined neck.

Distribution

A scarce breeding bird on rivers and lakes, particularly in northern and eastern Iceland.

Interesting facts

The common merganser is a specialised fish-eater with a narrow, serrated bill.
SourceLast verified: 08/09/2026