1. Département des sciences du bois et de la forêt, Université Laval, Ville de Québec, Québec, Canada; Boreal Avian Modelling Project
2. Western Illinois University, Department of Biological Sciences, Macomb, Illinois, U.S.A
3. American Bird Conservancy
4. Family Forest Network, Halifax, Nova Scotia, Canada
5. National Council for Air and Stream Improvement (NCASI), Inc., Mississippi State, Mississippi, U.S.A
6. Canadian Forest Service, Natural Resources Canada, Great Lakes Forestry Centre, Laurentian Forestry Centre, Northern Forestry Centre
7. Biological Sciences Department, Department of Renewable Resources, University of Alberta
8. Prince Edward Island Department of Environment, Energy and Climate Action - Fish and Wildlife Section. PO Box 2000 Charlottetown, PE C1A 7N8, Canada
9. Prentiss & Carlisle Forest Resource Management and Timberland Services
10. Ontario Ministry of Natural Resources and Forestry
11. Resolute Forest Products Canada
12. Sustainable Forestry Initiative
13. Manomet, P.O. Box 1770, Manomet, MA 02345, U.S.A
14. Wisconsin Department of Natural Resources
15. Environment and Climate Change Canada; Canadian Wildlife Service, Wildlife Research - East