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Ornithology

Andrews University

Glaucous-winged Gulls

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Full-Text Articles in Life Sciences

Effects Of Eggshell Coloration On Egg Cannibalism Among Glaucous-Winged Gulls, Isabelle Hwang Apr 2018

Effects Of Eggshell Coloration On Egg Cannibalism Among Glaucous-Winged Gulls, Isabelle Hwang

Honors Theses

A common source of reproductive loss in gulls is egg cannibalism. At a large Glaucous-winged Gull (Larus glaucescens) colony on Protection Island, Washington, cannibalism accounts for 55% of egg loss. Because cannibalism is a form of predation and birds have a highly developed sense of vision, I hypothesized that visible light coloration of Glaucous-winged Gull eggs plays a role in determining whether they are cannibalized. I used logistic regression to test whether egg fate was related to egg brightness, specific coloration, specific spot coverage, coloration relative to the most common coloration, and spot coverage relative to the most common spot …


Data For Henson Et Al. 2016, Shandelle Henson, James Hayward, J Cushing, Gordon Atkins, Sumiko Weir, Ashley Reichert, Wayanne Watson, Wadenerson Saint Martin, Amanda Sandler Jan 2016

Data For Henson Et Al. 2016, Shandelle Henson, James Hayward, J Cushing, Gordon Atkins, Sumiko Weir, Ashley Reichert, Wayanne Watson, Wadenerson Saint Martin, Amanda Sandler

Faculty Publications

These data are archived for the paper "Adaptation to short-term ENSO fluctuations may provide tipping points for populations subjected to long-term climate change" by Henson et al., submitted. Additional files: Supplementary Figure 1 | Sample plots on Violet Point, Protection Island National Wildlife Refuge, Washington, USA. The larger colony extends throughout much of the spit.


Data For Henson Et Al. 2016, Shandelle M. Henson, James L. Hayward, J M. Cushing, Gordon Atkins, Sumiko K. Weir, Ashley A. Reichert, Wayanne Watson, Wadenerson Saint Martin, Amanda Sandler Jan 2016

Data For Henson Et Al. 2016, Shandelle M. Henson, James L. Hayward, J M. Cushing, Gordon Atkins, Sumiko K. Weir, Ashley A. Reichert, Wayanne Watson, Wadenerson Saint Martin, Amanda Sandler

Shandelle M. Henson

These data are archived for the paper "Adaptation to short-term ENSO fluctuations may provide tipping points for populations subjected to long-term climate change" by Henson et al., submitted.
Additional files:
Supplementary Figure 1 | Sample plots on Violet Point, Protection Island National WildlifeRefuge, Washington, USA. The larger colony extends throughout much of the spit.


Data For Henson Et Al. 2014, Shandelle M. Henson, James L. Hayward, Gordon Atkins, Amanda Sandler, Wadenerson Saint Martin Nov 2014

Data For Henson Et Al. 2014, Shandelle M. Henson, James L. Hayward, Gordon Atkins, Amanda Sandler, Wadenerson Saint Martin

Faculty Publications

These data are archived for the paper "Changing sea surface temperature alters timescale of reproductive synchrony in seabirds" by Henson et al., currently submitted to Nature.