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Waterfowl productivity and use of nesting structures in the prairie pothole region
Over-water duck nests are usually more successful than upland nests. We evaluated mallard ( Anas platyrhynchos ) and giant Canada goose ( Branta canadensis maxima ) use of nest baskets, straw and hay bales, and earth-filled culverts and determined nesting success rates by structure type during 1987-1989. Mallards used bales and culverts more than baskets, whereas Canada geese used baskets more than bales or culverts. Nesting success was greatest for baskets and culverts (>80%) and lowest for bales (58.3%). Logistics aside, culverts appear to be the most valuable nesting structures for mallards, and baskets are the most valuable structures for Canada geese.
Estimating indirect impacts of wind-energy development for breeding grassland birds and waterfowl in the northern Great Plains
No abstract available.
National wetlands research center uses visual true color classification in waterfowl habitat mapping
No abstract available.
Estimating consumption of food by wintering waterfowl populations
No abstract available.
Distribution and abundance of waterfowl and submerged aquatic vegetation in Chesapeake Bay
No abstract available.
California's Central Valley wintering waterfowl: Concerns and challenges
No abstract available.
An analysis of the 1949-50 fowl cholera epizootic in Texas panhandle waterfowl
No abstract available.
The impact of the introduction of duck virus enteritis (duck plague) to the commercial duck industry and other waterfowl in the United States
No abstract available.
Solitary cases of duck plague in migratory waterfowl: Evidence of a problem?
No abstract available.