The breeding habitat of the canvasback is in North America prairie potholes.
The bulky nest is built from vegetation in a marsh and lined with down.
Loss of nesting habitat has caused populations to decline.
The canvasback usually takes a new mate each year, pairing in late winter on ocean bays.
It prefers to nest over water on permanent prairie marshes surrounded by emergent vegetation, such as cattails and bulrushes, which provide protective cover.
Other important breeding areas are the subarctic river deltas in Saskatchewan and the interior of Alaska.

It has a clutch size of approximately 5–11 eggs, which are greenish drab.
The chicks are covered in down at hatching and able to leave the nest soon after.
The canvasback sometimes lays its eggs in other canvasback nests and redheads often parasitize canvasback nests.
The breeding habitat of the canvasback is in North America prairie potholes. The bulky nest is built from vegetation in a marsh and lined with down. Loss of nesting habitat has caused populations to decline. The canvasback usually takes a new mate each year, pairing in late winter on ocean bays. It prefers to nest over water on permanent prairie marshes surrounded by emergent vegetation, such as cattails and bulrushes, which provide protective cover. Other important breeding areas are the subarctic river deltas in Saskatchewan and the interior of Alaska.
It has a clutch size of approximately 5–11 eggs, which are greenish drab. The chicks are covered in down at hatching and able to leave the nest soon after. The canvasback sometimes lays its eggs in other canvasback nests and redheads often parasitize canvasback nests.
Canvasback