Greater Scaup vs American Coot

In short

The Greater Scaup and American Coot are easily distinguished by their structure and plumage. The Greater Scaup is a diving duck with a rounded head and a blue-gray bill, while the American Coot is a rail with a chicken-like appearance, a distinctive white bill, and a frontal shield. Both species are found in wetlands, but their behaviors and vocalizations differ significantly.

Identification tips

1. Bill and Head Shape: Look for the rounded head and blue-gray bill of the Greater Scaup versus the white bill and frontal shield of the American Coot. 2. Plumage: Note the white flanks of the Greater Scaup compared to the uniformly dark gray body of the American Coot. 3. Behavior: Observe diving behavior in Greater Scaup and the awkward flying takeoff of the American Coot. 4. Vocalization: Listen for the loud calls of the American Coot, which are absent in the quieter Greater Scaup.

Size

The Greater Scaup is a medium-sized duck, generally larger than the American Coot, which is more compact and chicken-like.

Plumage

The Greater Scaup has a rounded head with a blackish-green sheen, white flanks, and a blue-gray bill. In contrast, the American Coot is dark gray with a black head and neck, and a prominent white bill and frontal shield.

Behaviour

Greater Scaup are proficient divers, often seen diving for food. American Coots are also good swimmers and divers but are awkward fliers, requiring long running takeoffs. Coots are more likely to be seen walking on land compared to the diving-focused Scaup.

Habitat

Both species inhabit wetlands, but Greater Scaup prefer open water bodies like lakes and coastal areas, while American Coots are found in a wider variety of wetlands, including marshes and ponds.

Voice

Greater Scaup are generally quieter, while American Coots are known for their loud cackling, grunting, and croaking calls.