Description and identification of American black duck, mallard, and hybrid wing plumageRonald E. Kirby, Northern Prairie Wildlife Research Center, Geological Survey (U.S.) · First published 2000Open the Tome
Wildlife exposure factors handbookMargaret McVey, Ronald E. Kirby · First published 1993Open the Tome
Premigrational movements and behavior of young mallards and wood ducks in north-central MinnesotaRonald E. Kirby · First published 1989Open the Tome
American black duck breeding habitat enhancement in the northeastern United StatesRonald E. Kirby · First published 1988Open the Tome
Fire in North American wetland ecosystems and fire-wildlife relationsRonald E. Kirby · First published 1988Open the Tome
