Tufted Duck vs Lesser Scaup

The Tufted Duck and Lesser Scaup are both diving ducks with similar plumage, but can be distinguished by key features. The Tufted Duck has a distinctive tuft on its head, while the Lesser Scaup lacks this feature and has a more rounded head. Both species are often found in similar habitats, but their ranges overlap mainly in winter.

Look for the tuft on the head of the Tufted Duck, especially in males. Observe the head shape: Tufted Duck has a peaked head due to the tuft, while the Lesser Scaup has a more rounded head. In mixed flocks, note the flank color: white in Tufted Duck males, grayish in Lesser Scaup males.

Both species are similar in size, but the Lesser Scaup is slightly smaller and more compact.

The Tufted Duck male is notable for its black head with a prominent tuft, contrasting with its white flanks. The Lesser Scaup male has a more rounded head without a tuft, and its sides are grayish. Females of both species are brown, but the Tufted Duck female may show a hint of a tuft.

Both species are diving ducks and exhibit similar feeding behaviors, often diving for aquatic plants and invertebrates.

Both species inhabit freshwater lakes and ponds, but the Tufted Duck is more commonly found in Europe and Asia, while the Lesser Scaup is primarily found in North America. They may overlap in coastal areas during winter.

Vocalizations are not a reliable distinguishing feature in the field for these species, as both are generally quiet and their calls are not prominent.