Anas strepera strepera (Linnaeus, 1758), male and female - The Gadwall Delta Ponds, Eugene, Lane Co., OR, January 10, 2012 © Donald H. Gudehus

Anas strepera strepera (Linnaeus, 1758), male - The Gadwall Delta Ponds, Eugene, Lane Co., OR, January 10, 2012 © Donald H. Gudehus

Anas strepera strepera (Linnaeus, 1758), female - The Gadwall Delta Ponds, Eugene, Lane Co., OR, January 10, 2012 © Donald H. Gudehus