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Showing 1 to 6 of 6 for “"Anas acuta"”.

  1. Studies in the Life History and Ecology of the American Pintail (<em>Anas acuta tzitzihoa</em> Vieliot) in Utah

    Fuller, Robert W.

    utahstate Repository record

  2. Factors Affecting Waterfowl Brood Use of Stock Ponds in South Dakota

    Mack, Gene D.

    … to 1.00 ha surface-water area. Blue-winged teal (Anas discors) broods were positively associated with alfalfa and negatively associated with total stream area on the study plot. Mallard (Anas platyrhynchos) broods were negatively associated with pasture and hayland. Pintail (Anas acuta) and …

    sdstate Repository record

  3. Factors Influencing Habitat Use By Breeding Waterfowl in South Dakota

    McEnroe, Michael R.

    … coefficients of determination for mallards (Anas platyrhynchos), pintails (Anas acuta), blue-winged teal (Anas discors), and gadwall (Anas strepera). Coefficient of determination for these species were greatest in the central Coteau des Prairies, the James River Valley, and the Coteau du …

    sdstate Repository record

  4. Breeding Waterfowl Populations in South Dakota

    Brewster, Wayne G.

    … South Dakota in 1974. Blue-winged teal (Anas discors), mallard (Anas platyrhynchos), pintail (Anas acuta), and gadwall (Anas strepera) were, in that order, the most abundant species. Diving ducks constituted less than 5 percent of the population each year. Highest diving duck densities …

    sdstate Repository record

  5. Distribution and Importance of Stockdams, Dugouts, and Natural Wetlands To Breeding Waterfowl In South Dakota

    Ruwaldt, James J.

    … populations throughout the study. Mallard (Anas platyrhynchos) and American wigeon (Anas crecca) populations in 1973 and mallard, pintail (Anas acuta), American wigeon, and northern shoveler (Anas clypeata) populations in 1974 used stockdams extensively. Blue-winged teal (Anas discors), …

    sdstate Repository record

  6. Northern pintail nest site selection, nest success, renesting ecology and survival in the intensively farmed prairies of southern Saskatchewan: an evaluation of the ecological trap hypothesis

    Richkus, Kenneth DanielForestry, Wildlife, and Fisheries2022

    Unlike most prairie nesting ducks (Anas spp.), the North American population of northern pintails (A. acuta, hereafter pintails) has failed to respond as expected to improved wetland conditions on the U.S. and Canadian prairies during the mid to late 1990s. My primary objectives were to test the …

    lsu-thes Repository record