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Anas strepera
Gadwalls are the size of Mallard ducks, but the bills are noticeably thinner. Females have a thin yellow edge to their dark bills. Females are a buff and brown color. They have a white wing patch that is often visible when swimming or resting. They have a large square head with a steep forehead.
These females were feeding on an urban pond. Gadwalls feed by tipping over to feed on submerged vegetation. They are known to steal food from other dabbling ducks and coots.
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