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Full-Text Articles in Life Sciences
Predicting Dynamics Of Aggregate Loafing Behavior In Glaucous-Winged Gulls (Larus Glaucescens) At A Washington Colony, Shandelle M. Henson, James L. Hayward, Christina M. Burden, Clara J. Logan, Joseph G. Galusha
Predicting Dynamics Of Aggregate Loafing Behavior In Glaucous-Winged Gulls (Larus Glaucescens) At A Washington Colony, Shandelle M. Henson, James L. Hayward, Christina M. Burden, Clara J. Logan, Joseph G. Galusha
Faculty Publications
Seabirds move throughout the day in changing, patchy environments as they engage in various behaviors. We studied the diurnal abundance dynamics of Glaucous-winged Gulls (Larus glaucescens) in a habitat patch dedicated to loafing in the Strait of Juan de Fuca, Washington. We constructed three differential equation models as alternative hypotheses and then used model selection techniques to choose the one that most accurately described the system. We validated the model on an independent data set, made a priori model predictions, and conducted a field test of the predictions. Clear dynamic patterns emerged in the abundance of loafing gulls, even though …
Do Rhinoceros Auklet, Cerorhinca Monocerata, Fledglings Fly To The Sea From Their Natal Burrows?, James L. Hayward, Jere K. Clayburn
Do Rhinoceros Auklet, Cerorhinca Monocerata, Fledglings Fly To The Sea From Their Natal Burrows?, James L. Hayward, Jere K. Clayburn
Faculty Publications
The mode of departure of Rhinoceros Auklet fledglings from their nest burrows has remained uncertain. Both walk-down and fly-down hypotheses have been proposed. Here we use the unique geography of Protection Island, Washington, to evaluate the fly-down hypothesis. Some fledglings raised on Protection Island do appear to walk to the water, but our results suggest that many of the island's fledgling Rhinoceros Auklets fly to the sea.