Skip to main content
U.S. flag

An official website of the United States government

Habitat Vulnerability Assessment for Wintering American Black Ducks

September 1, 2021

We estimated food availability among five main wetland cover types used by overwintering American Black Ducks: subtidal, fresh water, high marsh, low marsh, and mudflat. Bioenergetics models used to inform North American Waterfowl Management Plan (NAWMP) can be simplified into two major components: energetic demand and energetic supply.