- 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).
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.
Common. The continental population of breeding Lesser Scaup exhibits large yearly fluctuations. There has been a marked recent decline in populations.
- Austin, J. E., C. M. Custer, and A. D. Afton. 1998. Lesser Scaup (Aythya affinis). In The Birds of North America, No. 338 (A. Poole and F. Gill, eds.). The Birds of North America, Inc., Philadelphia, PA.