Cavanagh, P. M. 1990. Above-ground nesting by burrowing owls. J. Raptor Res. 24:68-69.

Garrison, B.A. 1990. Trends in winter abundance and distribution of Ferruginous Hawks in California. Trans. West. Sec. Wildl. Soc. 26:51-56.

Johnston, R. F., and S. G. Johnson. 1990. Reproductive ecology of feral pigeons. Pages 237-252 in J. Pinowski and J. D. Summers-Smith, editors. Granivorous birds in the agricultural landscape. Polish Scientific Publisher, Warszawa. 360 pp.

Max, T. A., R. A. Souter, and K. A. O'Halloran. 1990. Statistical estimators for monitoring spotted owls in Oregon and Washington in 1987. U.S. Forest Service Research Paper PNW-420. 13 pp.

Smith, G. W. 1990. Home range and activity patterns of black-tailed jackrabbits. Great Basin Naturalist 50:249-256.

Wilson, S. D. and J. M. Shay. 1990. Competition, fire, and nutrients in a mixed-grass prairie. Ecology 71:1959-67.

U.S. Fish and Wildlife Service (USFWS). 1990. Endangered and threatened wildlife and plants. Federal register 55(35):6190. February 21.

Bratton, S. P., S. Hendricks. 1990 (1988). Wood stork nesting, roosting, and foraging at Cumberland Island, Georgia. Oriole 53:17-24.

Dragoo, J. W., et al. 1990. Evolutionary and taxonomic relationships among North American arid-land foxes. J. Mammalogy 71:318-332.

Henke, S. E., and S. Demarais. 1990. Capturing jackrabbits by drive corral on grasslands in west Texas. Wildl. Soc. Bull. 18:31-33.

Marsh, P. C., and W. L. Minckley. 1990. Management of endangered Sonoran topminnow at Bylas Springs, Arizona: description, critique, and recommendations. Great Basin Naturalist 50:265-272.

Price, A. H. 1990. Phrynosoma cornutum. Cat. Am. Amph. Rept. 469.1-469.7.

Matthews, J.R. and C.J. Moseley (eds.). 1990. The Official World Wildlife Fund Guide to Endangered Species of North America. Volume 1. Plants, Mammals. xxiii + pp 1-560 + 33 pp. appendix + 6 pp. glossary + 16 pp. index. Volume 2. Birds, Reptiles, Amphibia

DeBruin, E. 1990. Field survey to the Organ Mts, Soledad and Beasley Canyons, May 7, 1990.

Muldavin, Esteban. 1990. Community field surveys to the Gray Ranch.

DeGeus, D. W. 1990. Productivity and habitat preferences of loggerhead shrikes inhabiting roadsides in a midwestern agroenvironment. Iowa State University, Ames, Iowa. MS thesis.

U.S. Fish and Wildlife Service (USFWS). 1990. Draft revised recovery plan for the eastern timber wolf. 93 pp.

Spellenberg, R. 1990. Page 5 of letter to USFWS Regional Director. 18 Sept 1990.

Brown, J.H. and E.J. Heske. 1990. Control of a desert grassland transition by a keystone rodent guild. Science. 250:1705-1707.

Frazer, N. B., J. W. Gibbons, and J. L. Greene. 1990c. Life table of a slider turtle population. Pages 183-200 in J. W. Gibbons, editor. Life history and ecology of the slider turtle. Smithsonian Institution Press, Washington, D.C.

Mehlhop, P. 1990. Field survey to Gray Ranch - Indian Creek Canyon, Aspen Spring. 19-21 Sept. 1990.

Mitchell, L. J., and R. A. Lancia. 1990. Breeding bird community changes in a Bald Cypress-Tupelo wetland following timber harvesting. Pages 189-201 in Proceedings of the Annual Conference of the Southeasten Association of Fish and Wildlife Agencies, Vol.

Reynolds, R.T., and B.D. Linkhart. 1990. Extra-pair copulation and extra-range movements in flammulated owls. Ornis Scandinavica 21:74-77.

Williams, J. E., M. A. Stern, A. V. Munhall, and G. A. Anderson. 1990. Conservation status of threatened fishes in Warner Basin, Oregon. Great Basin Naturalist 50(3):243-8.

Evers, D.C. 1990. Yellow Rail, COTURNICOPS NOVEBORACENSIS (Gmelin). Draft species abstract for Michigan Heritage Program, Michigan Department of Natural Resources, Lansing, MI.

Rinne, J.N. (1990) Unpublished USDA Forest Service Memo Conrtaining Estimated Fish Counts for Multiple Sites. Retrieved from Silver City Ranger District, Gila National Forest, USFS. 4 p.

Gorman, M. L., and R. D. Stone. 1990. The natural history of moles. Cornell Univ. Press. 208 pp.

Ballen, M. 1990. 1990 Mexican Spotted Owl Inventory Form

Orr, Mary V. 1990. Threatened, endangered and sensitive plants observation record for Lilium philadelphicum. US Forest Service

Wyoming Natural Diversity Database. No date. Unpublished data on file. Wyoming Natural Diversity Database, Laramie, WY.

Berg, W. E. 1990. Sharp-tailed grouse management problems in the Great Lakes states: does the sharp-tail have a future? The Loon 62:42-45.

Mehlhop, P. 1990. Field survey to Gray Ranch - NE slope Victorio Peak - talus of August 20, 1990.

Bull, E. L., A. L. Wright, and M. G. Henjum. 1990. Nesting habitat of flammulated owls in Oregon. J. Raptor Res. 24:52-55.

Geist, V. 1990. Agriculture versus bison in Canada's Wood Buffalo National Park. Conservation Biology 4:345-346.

Kreeger, T. J., et al. 1990. Pathological responses of red foxes to foothold traps. J. Wildl. Manage. 54:147-160.

UNKNOWN, 1990. Map of Mexican Spotted Owl 1990 Survey Red River Ski Area

Meyer, K. D. 1990. Kites. Pages 38-49 in Proceedings of the Southeast Raptor Management Symposium and Workshop. National Wildlife Federation, Washington, D.C.

Ringelman, J. K. 1990. Life history traits and management of the gadwall. U.S. Fish & Wildl. Serv., Fish and Wildlife Leaflet 13.1.2. 6 pp.

Shaw, D. M., and S. F. Atkinson. 1990. An introduction to the use of geographic information systems for ornithological research. Condor 92:564-570.

Howard, Mike. 1990. Field trip report, February 27, 1990, White Sands Missile Range. February 1990.

Sullivan, R.M. and R.A. Smartt. 1990. Biological survey of the Colorado chipmunk (Eutamias quadrivittatus), Oscura Mountain land snail (Oreohelix socorroensis), and other flora and fauna along the proposed access road to Jim Site (including Kidd and Duffy

Goudie, R. I. 1990. The status of the Harlequin Duck (HISTRIONICUS HISTRIONICUS) in eastern North America. Committee on the status of endangered wildlife in Canada (COSEWIC), Ottawa, Ontario. 59 pp. + 4 appendices.

Clark, B. K., and D. W. Kaufman. 1990. Short-term responses of small mammals to experimental fire in tallgrass prairie. Can. J. Zool. 68:2450-2454.

George, S. B. 1990. Unusual records of shrews in New Mexico. Southwest. Nat. 35:464-465.

Johnson, R. K., R. R. Roth, and J. T. Paul Jr. 1990. Mass variation in breeding Wood Thrushes. The Condor 92:89-96.

McCranie, J. R. 1990. Nerodia erythrogaster. Cat. Am. Amph. Rep. 500.1-500.8.

Smith, P. W., and S. A. Smith. 1990. The identification and status of the Bahama swallow in Florida. Birding 22:264-271.

Windberg, L.A. and C.D. Mitchell. 1990. Winter diets of coyotes in relation to prey abundance in southern Texas. J. Mamm. 71(3): 439-447.

Bucyanayandi, J. D., and J. M. Bergeron. 1990. Effects of food quality on feeding patterns of meadow voles along a community gradient. Journal of Mammalogy 71:390-6.

Easter-Pilcher, A. 1990. Cache size as an index to beaver colony size in northwestern Montana. Wildlife Society Bulletin 18:110-113.

Hershler, R. and W.L. Pratt. 1990. A new Pyrgulopsis (Gastropoda:Hydrobiidae) from southeastern California, with a modelfor historical development of the Death Valley hydrographic system. Proc. Biol. Soc. Wash. 103(2): pp. 279-299.

Marti, C. D. 1990. Sex and age dimorphism in the barn owl and a test of mate choice. Auk 107:246-54.

Reimchen, T. E. 1990. Introduction and dispersal of the Pacific treefrog, Hyla regilla, on the Queen Charlotte Islands, British Columbia. Canadian Field Naturalist 105:288-290.

Peterson, R. T. 1990b. A field guide to western birds. Third edition. Houghton Mifflin Co., Boston. 432 pp.

Bates, B.M., R.W. Robinson, and C. Jeffrey, eds. 1990. The Biology and Utilization of the Curcurbitaceae. Cornell University Press, Ithaca NY. ca.

DeBruin, E. 1990. Field survey to Organ Mts, Fillmore Canyon on May 10, 1990.

Rosenburg, C. P. 1990a. Barn owl nest trays and boxes. Virginia Department Game and Inland. Fish. Educational sheet, Richmond, Virginia. Unpublished. 3 pp.

Allen, J. Tudek, B. (1990) Assorted Mexican Spotted Owl Forms. Silver City Ranger District, Gila National Forest, USFS. 83 p.

Gila National Forest. 1990. Reserve Ranger District Spotted Owl habitat description - form 2.

Sugg, D.W. 1990. Unpublished listing of amphibians specimens from MSB. 5 pp.