Habitat use and nesting success of dabbling ducks in western New York grasslands / Bridgett L. Estel.
Material type:
TextSeries: Thesis ; (M.S.)Publication details: Ithaca, NY : Cornell University, 1989.Description: xii, 112 leaves : ill. ; 28 cmOnline resources: Abstract: A study was conducted in western New York during the 1987 and 1988 waterfowl breeding seasons to identify locally nesting dabbling duck species, document key nesting habitats, and estimate nest success rates (NSR). Data were collected within a 7,963 ha area on the Iroquois National Wildlife Refuge and state- owned Oak Orchard and Tonawanda Wildlife Management Areas. Systematic nest searches were done in 4 grassland cover types: planted grassland, naturally seeded grassland,reverted cropland, and rights-of-way. The mallard (Anas platyrhynchos)and blue-winged teal (A. discors) were the predominant nesting species,comprising 39% and 53% respectively of the 338 nests found in grasslands. The overall nest success rate for mallards was .09 and the NSR for blue-winged teal averaged .21. Mallard nesting attempts were most successful in planted grassland (NSR = .28) and naturally seeded grassland (.11) and least successful in rights-of-way (1%) and reverted cropland (3%). Planted grasslands
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Thesis(M.S.)--Cornell University, 1989.
"August 1989."
Includes bibliographical references.
A study was conducted in western New York during the 1987 and 1988 waterfowl breeding seasons to identify locally nesting dabbling duck species, document key nesting habitats, and estimate nest success rates (NSR). Data were collected within a 7,963 ha area on the Iroquois National Wildlife Refuge and state- owned Oak Orchard and Tonawanda Wildlife Management Areas. Systematic nest searches were done in 4 grassland cover types: planted grassland, naturally seeded grassland,reverted cropland, and rights-of-way. The mallard (Anas platyrhynchos)and blue-winged teal (A. discors) were the predominant nesting species,comprising 39% and 53% respectively of the 338 nests found in grasslands. The overall nest success rate for mallards was .09 and the NSR for blue-winged teal averaged .21. Mallard nesting attempts were most successful in planted grassland (NSR = .28) and naturally seeded grassland (.11) and least successful in rights-of-way (1%) and reverted cropland (3%). Planted grasslands