food items / food choices / vegetative food / food availability / duck food habits / adequate food base / abundant food resources / energy values / historic food / food / Food habits / energy / animal food categories / high energy-low protein diet / high energy values / law-enforcement personnel / samples containing food / ad libitum food / less food volume / food source / food selection / low energy foods / low energy diets / adequate benthic animal food / low energy-high protein diet / plant food / /
NaturalFeature
Atlantic coast / Potomac River / Bay tributaries / Sea Lettuce / James River / Chesapeake Bay / Bay Surf Scoters / Poplar Island / Gulf Coast / Choptank River / Smith Island / Chester River / Susquehanna River / /
Organization
University of Maryland / Federal government / US Federal Reserve / U.S. Fish & Wildlife Service / DAVID M. KIDWELL AND PETER C. OSENTON USGS Patuxent Wildlife Research Center / /
Person
Amethyst Gemclam / Ruddy Duck / Perry Unpub / Bay Ducks (Aythyini) / Munro / Ruddy Ducks / Dwarf Surfclam / DAVID M. KIDWELL / PETER C. OSENTON USGS / /
ProvinceOrState
Texas / Virginia / Maryland / Florida / North Carolina / /
Temporal Changes of Populations and Trophic Relationships of Wintering Diving Ducks in Chesapeake Bay MATTHEW C. PERRY, ALICIA M. WELLS-BERLIN, DAVID M. KIDWELL AND PETER C. OSENTON USGS Patuxent Wildlife Research Center