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Michael N. Kochert
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Michael N. Kochert

   Biography

Mike Kochert has conducted research on numerous raptor species for more than 40 years and is continuing his 40+ year work on Golden Eagles nesting in the Morley Nelson Snake River Birds of Prey NCA. He has been a member of Raptor Research Foundation since 1971. In addition to the Board of Directors, he has served as President, Vice President, Conferences Committee Chair, and on numerous ad hoc committees.

Scientist Emeritus, U.S. Geological Survey
Forest and Rangeland Ecosystem Science Center  970 Lusk St..
Boise,  ID  83706
Phone: 208-426-5201 Fax: 208-426-5210
Email: mkochert@usgs.gov


   Research Interests

No notes have been entered at this time.

Species of Interest: 
  • Red-tailed Hawk
  • Swainson's Hawk
  • Ferruginous Hawk
  • Golden Eagle
  • Prairie Falcon


   Publications

Kochert, M.N., and K. Steenhof. 2012. Frequency of nest use by Golden Eagles in southwestern Idaho. Journal of Raptor Research 46:248 -257.

Kochert, M.N., M.R. Fuller, L.S. Schueck, L. Bond, M.J. Bechard, B. Woodbridge, G.L. Holroyd, M.S. Martell, and U. Banasch. 2011. Migration patterns, use of stopover areas, and austral summer movements of Swainson's Hawks. Condor 113:89-106.

Kochert, M.N., K. Steenhof, and P.L. Kennedy. 2010. In memoriam, Dr. Carl D. Marti, 1944-2010. Journal of Raptor Research 44:335-336.

Kochert, M.N., and J.O. McKinley. 2008. Use of body mass, footpad length, and wing chord to determine sex in Swainson's Hawks. Journal of Raptor Research 42:138-141.

Varland, D.E., J.A. Smallwood, L.S. Young, and M.N. Kochert. 2007. Marking techniques. Pp. 221-236 in D.M. Bird and K.L. Bildstein (eds.), Raptor research and management techniques. Hancock House, Surrey, British Columbia, Canada.

McIntyre, C., K. Steenhof, M.N. Kochert, and M.W. Collopy. 2006. Long-term Golden Eagle studies in Denali National Park and Preserve. Alaska Park Science 5:42-45.

Steenhof, K., K.K. Bates, M.R. Fuller, M.N. Kochert, J.O. McKinley, and P.M. Lukacs. 2006. Effects of radiomarking on Prairie Falcons: attachment failures provide insights about survival. Wildlife Society Bulletin 34:116-125.

Steenhof, K., M.B. Fuller, M.N. Kochert, and K.K. Bates. 2005. Long-range movements, and breeding dispersal of Prairie Falcons from southwest Idaho. Condor 107:481-496.

Steenhof, K., M.R. Fuller, M.N. Kochert, and K.K. Bates. 2004. (Astract) The importance of prairie grasslands as post-breeding habitat for Prairie Falcons from Idaho. P. 95 in G.C. Trottier, E. Anderson, and M. Steinhilber (eds.), Proceedings of the 7th Prairie Conservation and Endangered Species Conference. The Provincial Museum of Alberta, Edmonton, Alberta, Canada.

Kochert, M.N., and K. Steenhof. 2002. Golden Eagles in the U.S. and Canada: status, trends, and conservation challenges. Journal of Raptor Research 36:32-40.

Kochert, M.N., K. Steenhof, C.L. McIntyre, and E.H. Craig. 2002. Golden Eagle (Aquila chrysaetos). In A. Poole and F. Gill (eds.), The Birds of North America no. 684. The Birds of North America, Inc., Philadelphia, PA. 44 pp.

Fuller, M., M.N. Kochert, and L. Ayers. 2001. Population monitoring plan for Golden Eagles in the western United States. Unpublished report by U.S.G.S. Forest and Rangeland Ecosystem Science Center, Snake River Field Station, to U.S. Fish and Wildlife Service, Boise, ID.

Goldstein, M.I., M.J. Bechard, M.L. Parker, M.N. Kochert, and A.E. Lanusse. 2000. Abundance, behavior, and mortality of Buteo swainsoni near San Francisco, Cordoba, Argentina in 1997. Hornero 15:117-121.

Lehman, R.N., K. Steenhof, L.B. Carpenter, and M.N. Kochert. 2000. Turnover and dispersal of Prairie Falcons in southwestern Idaho. Journal of Raptor Research 34:262-269.

Bechard, M.J., M.N. Kochert, J.O. McKinley, and M.I. Goldstein. 1999. (Abstract) Do Swainson's Hawks (Buteo swainsoni) make their long-distance migration using only stored fat? Abstracts of the 3rd Eurasian Conference of the Raptor Research Foundation, Mikulov, Czech Republic, 21-26 September 1999. Buteo 11 (Supplement):20.

Canavelli, S.B., M.J. Bechard, B. Woodbridge, M.N. Kochert, J.J. Maceda, and M.E. Zaccagini. 2003. Habitat use by Swainson's Hawks on their austral wintering grounds in Argentina. Journal of Raptor Research 37:124-134.

Kochert, M.N. 1999. (Abstract) Raptor conservation in the Snake River Birds of Prey National Conservation Area: a 30 year perspective. Buteo (supplement):10-11.

Kochert, M.N., and R.R. Olendorff. 1999. Creating raptor benefits from powerline problems. Journal of Raptor Research 33:39-42.

Kochert, M.N., K. Steenhof, L.B. Carpenter, and J.M. Marzluff. 1999. Effects of fire on Golden Eagle territory occupancy and reproductive success. Journal of Wildlife Management 63:773-780.

Lehman, R.N., K. Steenhof, M.N. Kochert, and L.B. Carpenter. 1999. Effects of military training activities on shrub-steppe raptors in southwestern Idaho, USA. Environmental Management 23:409-417.

Steenhof, K., M.N. Kochert, L.B. Carpenter, and R.H. Lehman. 1999. Long-term Prairie Falcon population changes in relation to prey abundance, weather, land uses, and habitat conditions. Condor 101:28-41.

Lehman, R.N., L.B. Carpenter, and M.N. Kochert. 1998. Assessing relative abundance and reproductive success of shrubsteppe raptors. Journal of Field Ornithology 69:244-256.

Marzluff, J.M., M.S. Vekasy, M.N. Kochert, and K. Steenhof. 1997. Productivity of Golden Eagles wearing backpack radiotransmitters. Journal of Raptor Research 31:223-227.

Steenhof, K., M.N. Kochert, and T.L. McDonald. 1997. Interactive effects of prey and weather on Golden Eagle reproduction. Journal of Animal Ecology 66:350-362.

Marti, C.D., and M.N. Kochert. 1996. Diet and trophic characteristics of Great Horned Owls in southwestern Idaho. Journal of Field Ornithology 67:499-506.

Tigner, J.R., M.W. Call, and M.N. Kochert. 1996. Effectiveness of artificial nesting structures for Ferruginous Hawks in Wyoming. Pp. 137-144 in D.M. Bird, D.E. Varland, and J.J. Negro (eds.), Raptors in human landscapes: adaptations to built and cultivated environments. Academic Press, London.

Marti, C.D., and M.N. Kochert. 1995. Are Red-tailed Hawks and Great Horned Owls diurnal-nocturnal dietary counterparts? Wilson Bulletin 107:615-628.

Vekasy, M.S., J.M. Marzluff, M.N. Kochert, R.N. Lehman, and K. Steenhof. 1996. Influence of radio transmitters on Prairie Falcons. Journal of Field Ornithology 67:680-690.

Lehman, R.N., K. Steenhof, M.N. Kochert, and L.B. Carpenter. 1994. Raptor abundance and reproductive success in the Snake River Birds of Prey National Conservation Area -- 1994. Pp. 16-40 in K. Steenhof (ed.), Snake River Birds of Prey National Conservation Area, research and monitoring, annual report 1994. U.S. Bureau of Land Management, Boise, ID.

Steenhof, K., M.N. Kochert, and R.N. Lehman. 1991. Raptor nesting densities and reproductive success in the Snake River Birds of Prey Area, 1991. Pp. 13-36 in K. Steenhof (ed.), Snake River Birds of Prey Research Project Annual Report, 1991. U.S. Bureau of Land Management, Boise, ID.

Steenhof, K., M.N. Kochert, and J.A. Roppe. 1993. Nesting by raptors and Common Ravens on electrical transmission line towers. Journal of Wildlife Management 57:271-281.

Holthuijzen, A.M.A., W.G. Eastland, A.R. Ansell, M.N. Kochert, R.D. Williams, and L.S. Young. 1990. Effects of blasting on behavior and productivity of nesting Prairie Falcons. Wildlife Society Bulletin 18:270-281.

Kochert, M.N. 1989. Responses of raptors to livestock grazing in the western United States. Pp. 194-203 in B. Giron Pendleton, C.E. Ruibal, D.L. Krahe, K. Steenhof, M.N. Kochert, and M.N. LeFranc, Jr. (eds.), Proceedings of the Western Raptor Management Symposium and Workshop, 26-28 October 1987, Boise, Idaho. National Wildlife Federation, Washington, D.C.

Olendorff, R.R., B.D. Bibles, and M.N. Kochert. 1989. Raptor habitat management under the U.S. Bureau of Land Management multiple-use mandate. Raptor Research Report 8:80.

Edwards, T.C., Jr., M.W. Collopy, K. Steenhof, and M.N. Kochert. 1988. Sex ratios of fledgling Golden Eagles. Auk 105:793-796.

Kochert, M.N., B.A. Millsap, and K. Steenhof. 1988. Effects of livestock grazing on raptors with emphasis on the southwestern U.S. Pp. 325-334 in R.L. Glinski, B. Giron Pendleton, M.B. Moss, M.N. Le Franc, Jr., B.A. Millsap, and S.W. Hoffman (eds.), Proceedings of the Southwest Raptor Management Symposium and Workshop, 21-24 May 1986, University of Arizona, Tucson. National Wildlife Federation, Washington, D.C.

Steenhof, K., and M.N. Kochert. 1988. Dietary responses of three raptor species to changing prey densities in a natural environment. Journal of Animal Ecology 57:37-48.

Kochert, M.N. 1986. Raptors. Pp. 313-349 in A.L. Cooperrider, R.J. Boyd, and H.R. Stuart (eds.), Inventory and monitoring of wildlife habitat. U.S. Department of the Interior, Bureau of Land Management, Washington, D.C.

Kochert, M.N., and M. Pellant. 1986. Multiple use in the Snake River Birds of Prey Area. Rangelands 8:217-220.

Steenhof, K., and M.N. Kochert. 1985. Dietary shifts of sympatric buteos during a prey decline. Oecologia 66:6-16.

Steenhof, K., M.N. Kochert, and M.Q. Moritsch. 1984. Dispersal and migration of southwestern Idaho raptors. Journal of Field Ornithology 55:357-368.

Kochert, M.N., K. Steenhof, and M.Q. Moritsch. 1983. Evaluation of patagial markers for raptors and ravens. Wildlife Society Bulletin 11:271-281.

Steenhof, K., M.N. Kochert, and J.H. Doremus. 1983. Nesting of subadult Golden Eagles in southwestern Idaho. Auk 100:743-747.

Lockhart, J.M., and M.N. Kochert. 1978. Effects of visual markers and telemetry devices on the nesting success of Golden Eagles. Unpublished report. 14 pp.

Steenhof, K., and M.N. Kochert. 1982. An evaluation of methods used to estimate raptor nesting success. Journal of Wildlife Management 46:885-893.

Olendorff, R.R., and M.N. Kochert. 1977. Land management for the conservation of birds of prey. Pp. 294-307 in R.D. Chancellor (ed.), World Conference on Birds of Prey: report of proceedings, Vienna 1975. International Council for Bird Preservation, London.

Beecham, J.J., and M.N. Kochert. 1975. Breeding biology of the Golden Eagle in southwestern Idaho. Wilson Bulletin 87:506-513.

Kochert, M.N. 1975. (Abstract) Effects of organochlorines and mercury on southwestern Idaho Golden Eagles. P. 126 in J.R. Murphy, C.M. White, and B.E. Harrell (eds.), Population status of raptors: proceedings of the Conference on Raptor Conservation Techniques (pt. 6), 22-24 March 1973, Fort Collins, CO. Raptor Research Report No. 3, Vermillion, SD.

Kochert, M.N. 1973. Density, food habits, and reproductive performance of raptors in the Snake River Birds of Prey Natural Area. Snake River Birds of Prey Natural Area Annual Progress Report, 1973. Bureau of Land Management, Boise, ID.

Kochert, M.N. 1972. Population status and chemical contamination in Golden Eagles in southwestern Idaho. M.Sc. thesis, University of Idaho, Moscow, ID.



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