December 10, 2015

Redhead duck

Seen last March on the Detroit River in Windsor, Ontario.

Aythya americana

Many ducks lay some of their eggs in other birds’ nests (a strategy known as “brood parasitism”), but female Redheads are perhaps tops in this department. Their targets include other Redheads as well as Mallard, Canvasback, Northern Pintail, Gadwall, Northern Shoveler, Ruddy Duck, American Wigeon—even Northern Harrier.
source - Cornell Lab of Ornothology.

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