Browsing Leonard, Marty by Title

Now showing items 7-9 of 9

  • Seasonal and Age-Dependent Dietary Partitioning between the Great Black-Backed and Herring Gulls 

    Steenweg, Rolanda J., Robert A. Ronconi, and Marty L. Leonard. 2011. "Seasonal and Age-Dependent Dietary Partitioning between the Great Black-Backed and Herring Gulls." Condor 113(4): 795-805.
    Studies of seabird diets may reveal subtle ways in which sympatric species partition resources to facilitate co-existence. We studied the variability and partitioning of diets between the Herring (Larus argentatus) and ...

  • Sex-specific, seasonal foraging tactics of adult grey seals (Halichoerus grypus) revealed by state-space analysis 

    Breed, Greg A., Ian D. Jonsen, Ransom A. Myers, W. Don Bowen, et al. 2009. "Sex-specific, seasonal foraging tactics of adult grey seals (Halichoerus grypus) revealed by state-space analysis." Ecology 90(11): 3209-3221. Copyright by the Ecological Society of America.
    In many large pelagic animals, observing behavior is limited to observation by radio or satellite telemetry. In many cases, discriminating different behaviors from telemetry data has been a key, but often elusive, goal. ...

  • Spatiotemporal Patterns in Nest Box Occupancy by Tree Swallows Across North America 

    Shutler, Dave, David J. T. Hussell, D. R. Norris, David W. Winkler, et al. 2012. "Spatiotemporal Patterns in Nest Box Occupancy by Tree Swallows Across North America." Avian Conservation and Ecology 7(1): 3-3.
    Data from the North American Breeding Bird Survey (BBS) suggest that populations of aerial insectivorous birds are declining, particularly in northeastern regions of the continent, and particularly since the mid-1980s. ...