My research examines the effects of multiple stressors (e.g. exotic species, land use, resource exploitation, contaminants) on ecosystems. Within this broad context, we are focusing on the development and use of wildlife indicators to assess the impacts of these stressors. This work is designed to improve our ability to recognize ecosystem change and evaluate impacts on wildlife health. Studies focus on birds in a variety of ecosystems including the Laurentian Great Lakes, Alberta’s Oil Sands Region, and the Arctic. Regardless of where our studies are being conducted, we strive to put the results into a broad context that enhances awareness of the degree to which humans are impacting ecosystems.