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Robert J. Ritchie

Robert J. Ritchie


Bob Ritchie established himself as an Alaskan raptor biologist and natural resource specialist in the mid 1970's. His interests first focused on Peregrines and Bald Eagles, but he expanded his expertise to other raptors, waterfowl, and seabirds. He has been project leader for a number of avian studies that have included Peregrine Falcon, Gyrfalcon, Bald and Golden eagles, Northern Goshawk, Spectacled and Steller’s eiders, Tundra and Trumpeter Swans, and Brant and Snow Goose throughout Alaska. Many of these studies were conducted for preconstruction and environmental assessment phases of industrial developments such as mining developments, oil field exploration and development, and utility developments, but others have been related to long-term population monitoring and recovery of the Peregrine Falcon.

Senior Scientist, ABR Environmental Research & Services
P.O. Box 80410  
Fairbanks,  AK  99708  United States
Phone: 907-455-6777, ext 143 Fax: 907-455-6781
Email: britchie@abrinc.com

   Research Interests

Raptor and waterfowl biology, particularly on Peregrine Falcons, Gyrfalcons, Golden Eagles, and Bald Eagles in interior and northern Alaska, and swans, geese (primarily Brant and Snow Geese), and Spectacled and Steller's eiders in northern Alaska.

Species of Interest: 
  • Gyrfalcon
  • Bald Eagle
  • Golden Eagle
  • Peregrine Falcon


Ritchie, R.J., and J. Maguire. 2012. Peregrine Falcons and Golden Eagles use swallow guano to support nests on the same cliff ledge in interior Alaska. Journal of Raptor Research 46(4):408-409       pdf

Ritchie, R.J., and J.E. Shook. 2011. Recovery and trends of Peregrine Falcons breeding in the Yukon-Tanana uplands, east-central Alaska, 1995-2003. Journal of Raptor Research 45:150-159.

Ritchie, R.J., and J. Rose. 2009. Results of Snow Goose surveys and a pilot study to band Snow Geese near Pt. Lay, Kasegaluk Lagoon, Alaska. Report by ABR, Inc. to Conoco Phillips Alaska, Inc., Fairbanks, AK. 14 pp.       pdf

Obritschwitsch, T., and R.J. Ritchie. 2008. Steller's Eider survey near Barrow, Alaska, 2008. Report by ABR, Inc.–Environmental Research & Services to U.S. Bureau of Land Management and Conoco-Phillips Alaska, Fairbanks, AK. 15 pp.       pdf

Ritchie, B. 2008. (Review of) Peregrine quest, from a naturalist's field note-book, by Clayton M. White. Journal of Raptor Research 42:73-74.

Rea, C., B. Ritchie, A. Stickney, and J.G. King. 2007. Multi-year monitoring program for Tundra Swans on the North Slope of Alaska. Bulletin of the Trumpeter Swan Society 33:136-139.

Ritchie, R.J., A.M. Wildman, and C.M. White. 2004. Peregrine Falcons nesting on lake bluffs on the Arctic coastal plain of northern Alaska. Journal of Raptor Research 38:158-160.       pdf

Ambrose, R., and R.J. Ritchie. 2003. Peregrine Falcons, naturalists, scientists, and biologists in Alaska, 1900 to 2000. Pp.189–198 in T.J. Cade and W. Burnham (eds.), Return of the Peregrine: a North American saga of tenacity and teamwork. The Peregrine Fund, Boise, ID. 394 pp.

Ritchie, R.J., A.M. Wildman, and D.A. Yokel. 2003. Aerial surveys of cliff-nesting raptors in the National Petroleum Reserve-Alaska, 1999, with comparisons to 1977. U.S.Department of the Interior, Bureau of Land Mangement, Technical Note 413:1-66.       pdf

Ritchie, R.J., J.G. King, A.A. Stickney, B.A. Anderson, J.R. Rose, A.M. Wildman, and S. Hamilton. 2002. Population trends and productivity of Tundra Swans on the Central Arctic Coastal Plain, northern Alaska, 1989-–2000. Waterbirds 25 (Special Publication 1):22–31.

Stickney, A.A., B.A. Anderson, R.J. Ritchie, and J.G. King. 2002. Spatial distribution, habitat characteristics, and nest-site selection by Tundra Swans on the Central Arctic Coastal Plain, northern Alaska. Waterbirds 25 (Special Publication 1):227–235.

Murphy, S.M., R.J. Ritchie, D.D. Roby, D.L. Nordmeyer, and A.G. Palmer. 2001. Responses of Peregrine Falcons to low-level jet aircraft. Terra Borealis 2:34-35.

Ritchie, R.J., R.M. Burgess, and R.S. Suydam. 2000. Status and nesting distribution of Lesser Snow Geese, Chen caerulescens caerulescens, and Brant, Branta bernicla nigricans, on the western Arctic Coastal Plain, Alaska. Canadian Field-Naturalist 114:395–404.

Ritchie, R.J., and J.G. King. 2000. Tundra Swans. Pp. 197–220 in J.C. Truett and S.R. Johnson (eds.), The natural history of an Arctic oil field. Academic Press, New York, NY.

King, J.G., B.A. Cooper, and R.J. Ritchie. 1998. Mixed-species swan flocks migrating in east-central Alaska. Northwestern Naturalist 79:104–107.

Ritchie, R.J., T.J. Doyle, and J.M. Wright. 1998. Peregrine Falcons (Falco peregrinus) nest in a quarry and on highway cutbanks in Alaska. Journal of Raptor Research 32:261-264.       pdf

Ritchie, R.J., and S. Ambrose. 1996. Distribution and population status of Bald Eagles (Haliaeetus leucocephalus) in Interior Alaska. Arctic 49:120-128.       pdf

Stickney, A.A., and R.J. Ritchie. 1996. Distribution and abundance of Brant (Branta bernicla) on the Central Arctic Coastal Plain of Alaska. Arctic 49:44–52.

Cooper, B.A., and R.J. Ritchie. 1995. The altitude of bird migration in east-central Alaska: a radar and visual study. Journal of Field Ornithology 66:590-608.       pdf

White, C.M., R.J. Ritchie, and B.A. Cooper. 1995. Density and productivity of Bald Eagles in Prince William Sound, Alaska, after the Exxon Valdez oil spill. American Society for Testing and Materials Special Technical Publication 1219:762-779.

Cooper, B.A., and R.J. Ritchie. 1994. Wind power and birds: radar techniques for environmental assessment. Pp. 323–325 in Wind Power 1994, Proceedings of the American Wind Energy Association, 10–13 May 1994, Minneapolis, MN.

Swem, T., C. McIntyre, R.J. Ritchie, P.J. Bente, and D.G. Roseneau. 1994. Distribution, abundance, and notes on the breeding biology of Gyrfalcons Falco rusticolus in Alaska. Pp. 437-444 in B.-U. Meyburg and R.D. Chancellor (eds.), Raptor conservation today. World Working Group on Birds of Prey, Berlin, and Pica Press, London.

White, C.M., R.J. Ritchie, and B.A. Cooper. 1993. (Abstract) Density and production of Bald Eagles (Haliaeetus leucocephalus) in Prince William Sound, Alaska, after the Exxon Valdez oil spill. Pacific Seabird Group Bulletin 20:59-60.

Ritchie, R.J., and R.E. Ambrose. 1992. The status of selected birds in east-central Alaska. Canadian Field-Naturalist 106:316-320.

Swem, T.R., C.M. White, and R.J. Ritchie. 1992. Comments on the status of certain birds on the north slope of Alaska. Northwestern Naturalist 73:84-87.

Cooper, B.A., R.H. Day, R.J. Ritchie, and C.L. Cranor. 1991. An improved marine radar system for studies of bird migration. Journal of Field Ornithology 62:367-377.       pdf

Ritchie, R.J. 1991. Effects of oil development on providing nesting opportunities for Gyrfalcons and Rough-legged Hawks in northern Alaska. Condor 93:180-184.       pdf

Ambrose, R.E., R.J. Ritchie, C.M. White, P.F. Schempf, T. Swem, and R. Dittrick. 1988. Changes in the status of Peregrine Falcon populations in Alaska. Pp. 73-82 in T.J. Cade, J.H. Enderson, C.G. Thelander, and C.M. White (eds.), Peregrine Falcon populations: their management and recovery. The Peregrine Fund, Boise, ID.

Ritchie, R.J., and R.E. Ambrose. 1987. Winter records of Bald Eagles, Haliaeetus leucocephalus, in interior Alaska. Canadian Field-Naturalist 101:86-87.

Ritchie, R.J. 1982. Porcupine quill and beetles in peregrine castings, Yukon River, Alaska. Raptor Research 16:59-60.       pdf

Ritchie, R.J. 1982. Investigations of Bald Eagles, Tanana River, Alaska, 1977-1980. Pp. 55-69 in W. Ladd and P. Schempf, eds. Proceedings of a Symposium and Workshop on Raptor Management and Biology in Alaska and Western Canada. U.S. Fish and Wildlife Service, Anchorage, AK.

Ritchie, R.J., and J.A. Curatolo. 1982. Notes on Golden Eagle productivity and nest site characteristics, Porcupine River, Alaska. Raptor Research 16:123-128.       pdf

Ritchie, R.J., J.A. Curatolo, and F.L. Craighead. 1982. First Townsend's Solitaire nest records for Alaska. Murrelet 63:94-95.

Ritchie, R.J. 1980. Food caching behavior of nesting wild hawk-owls. Raptor Research 14:59-60.       pdf

Ritchie, R.J., and J.A. Curatolo. 1980. Peregrine Falcon banding on the Porcupine River, Alaska, 1980. Unpublished report to U.S. Fish and Wildlife Service, Endangered Species Office, Anchorage, AK. 26 pp.

Ritchie, R.J. 1978. Probable Common Flicker nest on the North Slope of the Brooks Range, Alaska. Murrelet 59:31-33.

Ritchie, R.J., and R.E. Ambrose. 1978. Status of the Peregrine Falcon, Falco peregrinus, in the central Kuskokwim River region, Alaska. Canadian Field-Naturalist 92:293.

Ritchie, R.J. 1976. A suggested approach to resource planning for the Upper Yukon River. M.Sc. thesis, University of Alaska, Fairbanks, AK.

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