1. Natural Resources Institute, University of Manitoba, Winnipeg, Canada.
2. Environment and Climate Change Canada, Edmonton, Winnipeg, and Ottawa, Canada.
3. Cornell Lab of Ornithology, 159 Sapsucker Woods Road, Ithaca, NY, USA.
4. Dalhousie University, Halifax, Canada.
5. Geomatics and Landscape Ecology Research Laboratory, Carleton University, Ottawa, Canada.