Greater Scaup vs Velvet Scoter

In short

The Greater Scaup and Velvet Scoter are both diving ducks, but they differ in key features. The Greater Scaup has a rounded head and a broad blue bill, while the Velvet Scoter is larger with a distinctive white wing patch visible in flight.

Identification tips

1. Look for the white wing patch in Velvet Scoters, visible in flight. 2. Note the head shape: Greater Scaup have a rounded head, while Velvet Scoters have a more angular profile. 3. Check the bill: Greater Scaup have a broad blue bill, while Velvet Scoters have a more pronounced knob at the base of the bill. 4. Observe the habitat: Velvet Scoters are more likely found in marine environments.

Size

The Velvet Scoter is larger than the Greater Scaup.

Plumage

Greater Scaup males have a glossy green head, while Velvet Scoter males have a blackish plumage with a white wing patch. Females of both species are brown, but the Velvet Scoter female also shows the white wing patch.

Behaviour

Both species are diving ducks, but the Velvet Scoter is often seen in larger flocks on open water.

Habitat

Greater Scaup are found in freshwater lakes and coastal waters, while Velvet Scoters prefer coastal marine environments.

Voice

Greater Scaup are generally silent, while Velvet Scoters have a distinct whistling call during the breeding season.