PROFESSIONAL SOCIETIES:
- Am. Institute of Biological Sciences
- Am. Ornithologists' Union--Elective Member, 1985; Fellow, 1995
- Association of Field Ornithologists
- Audubon Society
- Cooper Ornithological Society
- Ecological Society of America
- Sigma Xi, the Scientific Research Society
- Society for Conservation Biology
- Society of American Foresters
- The Wildlife Society
- Wilson Ornithological Society
PROFESSIONAL ASSOCIATION SERVICE:
- Society for Northwestern Vertebrate Biology—Vice-President, and organizer of Inland Region meetings, 1978-79, 1982-83, 1989-1990; Associate Editor for Ornithology, Murrelet, 1983-1987.
- American Ornithologists’ Union—Annual meeting Session Chair, 1981, 1987, 1995; Membership Committee, 1985; Annual Meeting Co-chair, 1994, Committee on Brewster and Coues Awards, 1995; Associate Editor, Auk, 1995-1998.
- Cooper Ornithological Society—Board of Directors, 1985-86, 1988-92; Auction Committee Chairman, 1986; Painton Award Committee, 1988; Student Participation Committee Chairman, 1989-1993; Nominating Committee Chairman 1990; Mewaldt-King Award Committee 1993-1995; Annual Meeting Co-chair, 1994; Miller Award Committee, 2002-2003.
- Wilson Ornithological Society—Annual Meeting Co-chair, 1994.
- Montana Natural History Center—Board of Directors, 1990-1992.
- National Science Foundation—Ecology Panel Member, 1990; Conservation and Restoration Ecology Panel (declined), 1990.
- The Nature Conservancy—Board of Trustees, Montana Chapter 2004-2007.
- Consulting Editor—Studies in Avian Biology, 1990, 1995.
- Neotropical Migratory Landbird Conservation Program—Member, USFS Region I Steering Committee, 1990-1991; Vice-chair, National Research Working Group, 1993-1994.
- Past and continuing reviewer of manuscripts and proposals for American Naturalist, Auk, Naturalist, Auk, Behaviour, Behavioral Ecology, Behavioral Ecology and Sociobiology, Biological Conservation, Bioscience, Biotropica, Bulletin of Marine Science, The Canada Council, Journal of Avian Biology, Canadian Field Naturalist, Canadian Journal of Forest Research, Canadian Journal of Zoology, Condor, Conservation Biology, Ecography, Ecology, Ecological Monographs, Ecological Applications, Environmental Management, Forest Ecology and Management, Forest Science, Grand Canyon Monitoring and Research Center, Great Basin Naturalist, Journal of Field Ornithology, Journal of Mammalogy, Journal of Avian Biology, Journal of Environmental Management, Journal of Field Ornithology, Journal of Wildlife Management, Landscape Ecology, Memoirs of the California Academy of Science, Montana Outdoors, National Fish and Wildlife Foundation, National Geographic Society, National Park Service, National Science Foundation, Natural Areas Journal, Northwest Science, Northwestern Naturalist, Oikos, Proceedings of the Montana Academy of Sciences, Proceedings of the National Academy of Sciences, Science, Rangeland Ecology, Smithsonian Institution, Southwestern Naturalist, Studies in Avian Biology, USDA Forest Service, USDI Fish and Wildlife Service, Wildlife Conservation Society, Wilson Bulletin, World Wildlife Fund.