Winter 2014-15 Field Season

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The winter 2014-15 field season is well underway. Along with their excellent field crew, Justin and Carolyn are trapping deer to be fitted with radio collars. I am working on setting up giving up density trays to assess predation risk in wolf-recolonized and wolf-absent areas.

In weighing foraging options, animals tradeoff food and safety. The giving up density (GUD) is the amount of food remaining in a depletable food patch after a forager has ceased harvesting the patch, with higher GUDs in risky habitat than safe habitat. In Northeast Washington, deer may be trading off foraging due to the increased risk of predation from naturally recolonization of gray wolves. I predict higher GUD in wolf-recolonized areas compared with non-wolf areas.

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