Mehlhop, P. 1990. Field survey to Gray Ranch - S. Animas Valley and Playas Valley of August 18, 1990.

Medin, D. E. 1990. Birds of a shadscale (ATRIPLEX CONFERTIFOLIA) habitat in east central Nevada. Great Basin Nat. 50:295-298.

Porter, S.D. and D.A. Savignano. 1990. Invasion of polygyne fire ants decimates native ants and disrupts arthropod community. Ecology 71(6):2095-2106.

Van Daele, L. J., V. G. Barnes, Jr., and R. B. Smith. 1990. Denning characteristics of brown bears on Kodiak Island, Alaska. International Conference on Bear Research and Management 8:257-267.

Wakeley, J. S., T. H. Roberts, and C. O. Martin. 1990. Auditory survey methods. Section 6.3.5, U.S. Army Corps of Engineers Wildlife Resources Management Manual. Tech. Rep. EL-90-7. Waterways Expt. Station, Vicksburg, Mississippi. 34 pp.

DeBusk, Will E. ("for the Commander Army Materiel Test and Eval"). No date, assumed 1990. Memorandum for EL-N, Subject: Threatened and endangered plant species (T&E) survey conducted at Small Missile Range (SMR) Kinetic Energy Missile (KEM) Test Program.

Olenick, B. 1990. Breeding biology of burrowing owls using artificial nest burrows in Southeastern Idaho. M.S. thesis, Idaho State University, Pocatello, ID.

Churchfield, S. 1990. The natural history of shrews. Cornell University Press, Ithaca, NY. 178 pp.

Mello, M.J. 1990. Documentation of new habitats for Papaipema sulphurata and survey of known colonies to determine population stability. Prepared for Massachusetts Natural Heritage & Endangered Species Program. 7pp.

Parker, A. R., and J. S. Castrale. 1990. Barn owl survey and management efforts in 1989. Wildl. Manage. and Res. Notes No. 484. Indiana Department of Natural Resources, Indianapolis, Indiana. 9 pp.

Unknown (1990) Data From Flagstaff RM. Retrieved from Silver City Ranger District, Gila National Forest, USFS. 2 p.

Barker, W. T., et al. 1990. Effects of specialized grazing systems on waterfowl production in southcentral North Dakota. Trans. 55th North American Wildl. & Nat. Res. Conf., pp. 462-474.

DeBruin, E. 1990. Field survey to Organ Mts for Coryphantha organensis. Davies Tank field map, Sept 24, 1990.

Bowling, A. T., and R. W. Touchberry. 1990. Parentage of Great Basin feral horses. J. Wildl. Manage. 54:424-429.

Kerpez, T. A., and N. S. Smith. 1990a. Competition between European starlings and native woodpeckers for nest cavities in saguaros. Auk 107:367-375.

Phillips, J. B. 1990. Lek behaviour in birds: do displaying males reduce nest predation? Animal Behaviour 39:555-565.

Sakai, H. F., and B. R. Noon. 1990. Variation in the foraging behavior of two flycatchers: associations with stage of the breeding cycle. Studies in Avian Biology 13:237-244.

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

Sivinski, R. (1990) Status Report on Sophora gypsophila var. guadalupensis. Retrieved from Guadalupe Ranger District, Liincoln National Forest, USFS. 30 p.

Bull, E. L., R. S. Holthausen, and M. G. Henju. 1990. Techniques for monitoring pileated woodpeckers. Forest Service General Technical Report. PNW-GRT-269.

Barrett, S. L. 1990. Home range and habitat of the desert tortoise (Xerobates agassizi) in the Pichaco Mountains of Arizona. Herpetologica 46:202-206.

Burger, J. 1990. Response of hatchling pine snakes (Pituophis melanoleucus) to cues of sympatric snakes. Copeia 1990:1160-3.

Garrison, T. E., and T. L. Best. 1990. Dipodomys ordii. Am. Soc. Mamm., Mammalian Species No. 353:1-10.

Johnson, W. N. and P. W. Brown. 1990. Avian use of a lakeshore buffer strip and an undisturbed lakeshore in Maine. Northern Journal of Applied Forestry 7:114-117.

MacIvor, L. H., S. M. Melvin, and C. R. Griffin. 1990. Effects of research activity on piping plover nest predation. J. Wildlife Management 54:443-447.

Rodgers, J. A., Jr. 1990. Breeding chronology and clutch information for the wood stork from museum collections. J. Field Ornithology 61:47-53.

Williams, P. L. 1990d. Use of radiotracking to study foraging in small terrestrial birds. Studies in Avian Biology 13:181-186.

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.