Common Eider vs Goosander

In short

The Common Eider and Goosander are both large waterfowl, but they differ significantly in structure and habitat preferences. The Common Eider is a sea duck with a distinctive sloping forehead and large, wedge-shaped bill, while the Goosander is a streamlined diving duck with a long, narrow, serrated bill suited for catching fish.

Identification tips

• Bill Shape: Look for the Common Eider's large, wedge-shaped bill versus the Goosander's long, narrow, serrated bill.
• Head Profile: The Common Eider has a sloping forehead, while the Goosander has a more streamlined head with a distinct crest in females.
• Habitat: Note the environment; Common Eiders are coastal, while Goosanders are typically found on freshwater bodies.
• Plumage: In males, check for the Eider's black and white pattern versus the Goosander's dark green head and white body.

Size

Both species are large ducks, but the Common Eider is generally bulkier and more robust compared to the sleeker, more elongated Goosander.

Plumage

Male Common Eiders have striking black and white plumage with a greenish nape, while females are mottled brown. Male Goosanders have a white body with a dark green head and a distinctive thin red bill; females have a gray body with a reddish-brown head and a white chin patch.

Behaviour

Common Eiders are often seen in coastal marine environments, forming large flocks and diving for mollusks. Goosanders are more commonly found in freshwater habitats, diving for fish and often seen in smaller groups or pairs.

Habitat

Common Eiders are typically found in coastal and marine environments, especially in the Arctic and sub-Arctic regions. Goosanders prefer freshwater lakes and rivers, often in forested areas, and are more widespread across temperate regions.

Voice

Common Eiders are known for their soft cooing calls, while Goosanders have a more subdued vocal presence, with occasional low grunts or croaks.