Sauer, J. R., and S. Droege. 1990. Recent population trends of the eastern bluebird. Wilson Bull. 102:239-252.

Williams, L. R., and G. N. Cameron. 1990. Intraspecific response to variation in food resources by Attwater's pocket gopher. Ecology 71:797-810.

Toepfer, J.E., R.L. Eng, and R.K. Anderson. 1990. Translocating prairie grouse: what have we learned? Transactions of the 55th North American Wildlife & Natural Resource Conference: 569-579.

Bock, C. E., H. M. Smith, and J. H. Bock. 1990. The effect of livestock grazing upon abundance of the lizard, Sceloporus scalaris, in southeastern Arizona. J. Herpetol. 24:445-446.

Dickerman, R. W. 1990. Geographic variation in the juvenal plumage of the common nighthawk (CHORDEILES MINOR) in North America. Auk 107:610-613.

Gutierrez, R. J., and J. Pritchard. 1990. Distribution, density, and age structure of spotted owls on two southern California habitat islands. Condor 92:491-495.

Machado, C. G. 1990. Vireo olivaceus (Vireonidae): uma espécie migratória nos bandos mistos de aves na Mata Atlântica do sudeste brasileiro. Ararajuba 1.

Plummer, M. V. 1990. Nesting movements, nesting behavior, and nest sites of green snakes (Opheodrys aestivus) revealed by radiotelemetry. Herpetologica 46:190-195.

Sinervo, B. 1990. The evolution of maternal investment in lizards: an experimental and comparative analysis of egg size and its effects on offspring performance. Evolution 44:279-294.

S90SCOSBNMUS, Legacy reference. Physical copy not yet located.

Hatch, S.L., K.N. Gandhi, and L.E. Brown. 1990. Checklist of the vascular plants of Texas. Texas Agricultural Experiment Station, College Station. 158 pp.

Argus, G.W. and K.M. Pryer. 1990. Rare Vascular Plants of Canada. Our Natural Heritage. Canadian Museum Nature. Ottawa. 191+ pp.

Castetter, R. 1990. Field survey to Gray Ranch - Deer Creek. 8 July, 1990.

Mehlhop, P. 1990. Field survey to Gray Ranch - Lard Tank, Playas Valley. 23 Sept. 1990.

Sibley, Charles G. and Burt L. Monroe, Jr. 1990. Distribution and Taxonomy of Birds of the World. Yale University Press. New Haven, Connecticut and London. 1111pp.

Faber, R. A. 1990. Nesting Ecology of the black tern on the Upper Mississippi River National Wildlife and Fish Refuge and the Trempealeau National Wildlife Refuge. unpublished Final Report for FWS Grant Agreement No. 14-16-0003-90-951.

Pereyra, M. E. 1990. Factors affecting nestling development and thermal regulation in the Dusky Flycatcher (Empidonax oberholseri). M.A. Thesis, Occidental College, Los Angeles.

Bock, C.E., er.al. 1990. The effects of livestock grazing upon abundance of the lizard Sceloporus Scalaris, in southeastern Arizona. Jour. of Herp. 24(4):445-446.

Propst, D. L. 1990. Non-game Biologist. New Mexico Department of Game and Fish, Sante Fe, NM.

Dunn, J. L., and K. L. Garret. 1990. Identification of ruddy and common ground-doves. Birding 22:138-145.

Kaufman, K., 1990. The practiced eye: Common Merganser and Red-breasted Merganser. American Birds 44(5):1203-1205.

Mehlhop, P. 1990. Field survey to Gray Ranch - high talus north of Brushy Peak, west facing of August 20, 1990.

Menkens, G. E., Jr., D. E. Biggens, and S. H. Anderson. 1990. Visual counts as an index of white-tailed prairie dog density. Wildl. Soc. Bull. 18:290-296.

Rea, A. M., and K. L. Weaver. 1990. The taxonomy, distribution, and status of coastal California cactus wrens. Western Birds 21:81-126.

Varela-Romero, A., C. Galindo-Duarte, E. Saucedo-Monarque, L.S. Anderson, P. Warren, S. Stefferud, J. Stefferud, S. Rutman, T. Tibbits and J. Malusa. 1990. Re-discovery of Gila intermedia and Gila purpurea in northern Sonora, Mexico. Proceedings of the De

Zeranski, J. D., and T. R. Baptist. 1990. Connecticut birds. Univ. Press of New England, Hanover, New Hampshire.

Dunmire, W. 1990. Dunmire plant collection unpublished notes on Amsonia tharpii collections. 1 p + map.

Poague, Lee. 1990. Argemone pleiacantha Management Plan. United States Forest Service (USFS) Regional Office, Albuquerque, NM. p. 16.

Eldridge, J.L. 1990. Management for migrating shorebirds on national wildlife refuges in the midwest. Bell Museum of Natural History, Univ. of Minnesota, Minneapolis. 17pp.

Morrow, Patrick. 1990. Memorandum for STEWS-EL-N (200-2w), Subject: KEM Camera Site coordination effort by EL-N, 16 Feb 90. 7 pp.

West, S. 1990. Fall 1990 report on birds of Gray Ranch. Unpubl. report for the Nature Conservancy (New Mexico Natural Heritage Program) dated 1 Aug. - 30 Nov 1990. 12 p.

Castetter, R. 1990. Field survey to Gray Ranch - Deer Creek. 6, July, 1990.

Mehlhop, P. 1990. Field survey to Gray Ranch - Tank E. of mouth of Indian Creek Canyon on bajada. 18 Aug. 1990.

Beane, J. C. and S. L. Alford. 1990. Destruction of a Pine Warbler brood by an adult cowbird. The Chat 54:85-7.

DeBruin, E. 1990. Field survey to Organ Mts, North Canyon, for Oenothera organensis. Sept 7, 1990.

Williams, C. M. 1990. Graduate student, Arizona State University, Tempe, AZ.

Bowditch, J. 1990. A way to stop crow and owl predation at purple martin houses. Purple Martin Update 2(3):8-9.

Ganey, J. L. 1990. Calling behavior of spotted owls in northern Arizona. Condor 92:485-490.

Kirkpatrick, J. F., I. K. M. Liu, and J. W. Turner, Jr. 1990. Remotely-delivered immunocontraception in feral horses. Wildl. Soc. Bull. 18:326-330.

Pitocchelli, J. 1990. Plumage, morphometric, and song variation in mourning (OPORORNIS PHILADELPHIA) and MacGillivray's (O. TOLMIEI) warblers. Auk 107:161-171.

Scott, T. A., and M. L. Morrison. 1990. Natural history and management of the San Clemente loggerhead shrike. Western Foundation of Vertebrate Zoology, Proceedings 4:23-57.

Gold, I. 1990. Threatened and endangered plant observation. observation form for Gilia formosa 10 Oct. 1990. 1 page & map.

Spellenberg, R.. 1990. Unpublished letter to Bill Dunmire of the NM Nature Conservancy regarding type specimens of Senecio spellenbergii, dated 28 Feb 1990. 3 p.

Fischer, T.F. 1990. Revision of species inventory checklists for Sandia National Laboratories, Albuquerque Bernalillo County New Mexico. Albuquerque, NM: Sandia National Laboratores; Contractor Report SAND90-7098. 40 p.

Benkman, C. W. 1990. Intake rates and the timing of crossbill reproduction. Auk 107:376-386.

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.

DeMarais, B. D. 1990. Graduate student. Arizona State University, Tempe, AZ. Personal communication, April 19, 1990.

Bouta, R. P., and R. E. Chambers. 1990. Status of threatened spruce grouse populations in New York: a historical perspective. Pages 82-91 in Mitchell et al., eds. Ecosystem management: rare species and significant habitats. New York State Mus. Bull. 471.

Dolbeer, R. A. 1990. Ornithology and integrated pest management: red-winged blackbirds AGELAIUS PHOENICEUS and corn. Ibis 132:309-322.

Hagan, J. M., III, and J. R. Walters. 1990. Foraging behavior, reproductive success, and colonial nesting in ospreys. Auk 107:506-521.

Manser, P. 1990. The clapper rail (RALLUS LONGIROSTRIS). Gosse Bird Club Broadsheet 55:9-10.

Prescott, D. R. C., and A. L. A. Middleton. 1990. Age and sex differences in winter distribution of American goldfinches in eastern North America. Ornis Scandinavica 21:99-104.

Smith, A. T., and M. L. Weston. 1990. Ochotona princeps. Am. Soc. Mamm., Mammalian Species No. 352:1-8.

Kaufman, K. 1990. A field guide to advanced birding. Houghton Mifflin Co., Boston. xiv + 299 pp.