- 15.4–18.1 in
- 26.8–30.7 in
- 16–38.4 oz
- Petit fuligule, Petit morillon (French)
- Pato boludo-menor, Pato del medio (Spanish)
- The Lesser Scaup is a regular, if relatively uncommon, visitor to Hawaii, and is the third most abundant duck in the state. Only the Hawaiian Duck actually breeds there.
- An adult Lesser Scaup may pretend to be dead (immobile with head extended, eyes open, and wings held close to body) when grasped by a red fox.
- Lesser Scaup chicks are capable of diving under water on their hatching day, but they are too buoyant to stay under for more than just a moment. By the time they are 5 to 7 weeks old they are able to dive for 2-25 seconds and swim underwater for 15-18 meters (50-60 ft).
- The oldest recorded Lesser Scaup was a male, and at least 17 years, 7 months old when he was shot in Wisconsin in 1973. He had been banded in Maryland in 1956.
Found on lakes and ponds. Winters in fresh or brackish water.
Clams, snails, crustaceans, aquatic insects, seeds, and aquatic plants.
- Clutch Size
- 6–14 eggs
- Egg Description
- Pale to dark olive or greenish buff.
- Condition at Hatching
- Downy and eyes open. Leave nest as soon as they are dry. Feed themselves immediately.
Bowl of grasses or other vegetation, lined with down. Placed on ground or in mound of vegetation over water.
Dives under water to capture food.
Lesser Scaup are common, but populations are declining. Between 1966 and 2015, the species declined by about 60%, according to the North American Breeding Bird Survey. Lesser Scaup rates a 12 out of 20 on the Continental Concern Score. It is not on the 2016 State of North America's Birds Watch List. The continental population of breeding birds exhibits large yearly fluctuations.