02320oam 2200733Ia 450 991069632800332120180112090841.0(CKB)5470000002377554(OCoLC)191805295(OCoLC)839772668(EXLCZ)99547000000237755420080204d2000 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierDescription and identification of American black duck, mallard, and hybrid wing plumage /by Ronald E. Kirby [and others]Jamestown, N.D. :U.S. Geological Survey, Biological Reosurces Division, Northern Prairie Wildlife Research Center,[2000]1 electronic text HTML fileBiological science report ;2000-0002Title from HTML title screen (viewed on Feb. 4, 2008).At head of title: Northern Prairie Wildlife Research Center."March 2000."Includes bibliographical references.American black duck, mallard, and hybrid wing plumageBlack duckIdentificationMallardIdentificationDucksIdentificationWaterfowlIdentificationHybridizationBlack duckfastDucksfastHybridizationfastMallardfastWaterfowlfastIdentification guides.fastBlack duckMallardDucksWaterfowlHybridization.Black duck.Ducks.Hybridization.Mallard.Waterfowl.Kirby Ronald E1418718Northern Prairie Wildlife Research Center (1997- )Geological Survey (U.S.)GPOGPOGPOXFFOCLCQOCLCFOCLCOOCLCQOCLOCLCAGPOBOOK9910696328003321Description and identification of American black duck, mallard, and hybrid wing plumage3530963UNINA