Canvasbacks are the biggest of the diving ducks found in the state. They are generally more wary and less tolerant of human presence than some of the other ducks. Numbers are far below historical levels, probably due to losses of wetland habitat essential for breeding success.
Habitat
Marshes, sloughs, shallow lakes and ponds with emergent vegetation along the edges.
Diet
Mostly the leaves, roots, and seeds of aquatic plants, also some insects, crustaceans, and small fish.
Behavior
Primarily forages in water a few feet deep, diving underwater for food. They also sometimes feed at the surface, either grabbing food items from the water's surface, or tipping down and submerging their head underwater.
Nesting
May through July. The nest of a Canvasback is a basket of reeds and other dead vegetations, placed in dense wetland vegetation or on nearby shoreline. The female usually lays between 8 and 11 eggs, and she alone incubates them. The young leave the nest within a few hours of hatching, and find their own food. The female stays with the young and protects them. The young fledge after about 9 weeks.
Song
Croaks or grunts.
Migration
Summers in the western U.S., northern Great Plains, Alaska, and western Canada. Winters in the southern U.S., near the U.S. coasts, and Mexico.
Similar Species
Redhead
Conservation Status
Has been in general decline the last several decades. However, they are still found over a wide geographic area, and overall populations are not currently felt to be threatened. The IUCN lists the Canvasback as a species of "Least Concern".
Photo Information
March 30th, 2003 -- Western Minnehaha County -- Terry L. Sohl
Interactive eBird Map
Click to access the eBird species page for Canvasback
