Aggressive interactions between these two species were studied during the breeding season on wetlands in northeastern Maine. When black ducks and mallards were together on the same wetland, both species interacted with conspecifics more than twice as often. Mallards on the area were neither more aggressive than nor competitively superior to black ducks. Habitat characteristics of American woodcock nest sites on a managed area in Maine. McAuley, D.G., J.R. Goldsberry, and J.R. Longcore. 1993.
Omnidirectional aircraft antennas for aerial telemetry.
McAuley, D.G., J.R. Longcore, and G.F. Sepik. 1993. Behavior of male and female woodcock during the breeding season. U.S. Fish Wildl. Serv., Fish Wildl. Derleth, E.L., D.G. McAuley, and T.J. Dwyer. 1989.