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Chapman, R. W. 1990. Mitochondrial DNA analysis of striped bass populations in Chesapeake Bay. Copeia 1990:355-366.

Ham, J. C., and P. N. Lehner. 1990. Notes on gray jay demographics in Colorado. Wilson Bull. 102:698-702.

Muldavin, E. 1990. Gray Ranch vegetation survey, 1990. New Mexico Natural Heritage Program

Nicholls, J. L., and G. A. Baldassarre. 1990. Habitat associations of piping plovers wintering in the United States. Wilson Bull. 102:581-590.

Shields, M. A., and J. F. Parnell. 1990. Marsh nesting by American oystercatchers in North Carolina. J. Field Ornithol. 61:431-433.

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Ivey, D. 1990. Aspicarpa hirtella specimen collected on Gray Ranch, Middle Animas Bajada Macrosite. Natural Heritage New Mexico

Turner, R. (1990). Area survey results for Corphantha[sic] sneedii var sneedii. Guadalupe RD, Lincoln NF, USFS. 1 p.

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Kartesz, J. 1990. Synonymized checklist of the vascular flora [of North America north of Mexico, and Hawaii]. Unpublished second review draft.

Todsen, Thomas K. 1990. T and E survey of the Oscura Mountains. 4 August 1990.

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Debruin, E. 1990. Field notes from August and September, 1990. New Mexico Natural Heritage Program.

Dijak, W. D., B. Tannenbaum, and M. A. Parker. 1990. Nest-site characteristics affecting success and reuse of red-shouldered hawk nests. Wilson Bull. 102:480-486.

Houston, C. S. 1990. Saskatchewan Swainson's hawks. Am. Birds 44:215-220.

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Cibola National Forest. 1990. Mexican Spotted Owl daytime follow-up visit form, survey for Mexican Spotted Owl.

U.S. Department of Agriculture (USDA). 1990. Regional forester's sensitive species list, Coronado National Forest, U.S. Forest Service Southwest Region--Region 3.

Paul, L. (1990) Note to "Bruce," Containing observations of Mexican Spotted Owls. Retrieved from Silver City Ranger District, Gila National Forest, USFS. 20 p.

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Diamond, G. 1990. Morone saxatilis returns! (The rock are back!). Maryland Magazine, Autumn 1990, pp. 53-54.

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Kilpi, M. 1990. Breeding biology of the herring gull LARUS ARGENTATUS in the northern Baltic. Ornis Fennica 67:130-140.

Pierce, B.A. and Whitehurst, P.H. 1990. Pseudacris clarkii. Catalogue of American Amphibians and Reptiles. 458:1-3.

Szaro, R.C. Southwestern Riparian Plant Communities: site characteristics, tree species distributions, and size-class structures. For. Ecol. Manage. 33/34:315-334.

Apa, A.O., D.W. Uresk and R.L. Linder. 1990. Black-tailed prairie dog populations one year after treatment with rodenticides. Great Basin Naturalist 50(2):107-113

Burger, L. W., Jr., E. W. Kurzejeski, T. V. Dailey, and M. R. Ryan. 1990. Structural characteristics of vegetation in CRP fields in northern Missouri and their suitability as bobwhite habitat. Transactions of the North American Wildlife Conference 55:75-8

Franzreb, K.E. 1990. An analysis of options for reintroducing a migratory, native passerine, the endangered Least Bell's Vireo in the Central Valley, California. Biological Conservation 53(2):105-124.

Hussell, D. J. T. 1990. Implications of age-dependent bill length variation in EMPIDONAX for identification of immature alder and willow flycatchers. Journal of Field Ornithology 61:54-63.

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Safina, C. 1990a. Foraging habitat partitioning in roseate and common terns. Auk 107:351-358.

Tyus, H. M., and C. A. Karp. 1990. Spawning and movements of razorback sucker, Xyrauchen texanus, in the Green River basin of Colorado and Utah. Southwestern Naturalist 35:427-433.

Sublette, J. E., M. D Hatch, and M. Sublette. 1990. The fishes of New Mexico. University New Mexico Press, Albuquerque, New Mexico. 393 pp.

Novak, P. G. 1990. Population status of the black tern (CHLIDONIAS NIGER) in New York state, 1989. New York Sate Dept. of Environmental Conservation, Division of Fish and Wildlife, Nongame Unit, Delmar, NY. 30 pp.

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Castetter, R. 1990. Bird survey of Gray Ranch and Organ mountains. Unpubl. report for New Mexico Natural Heritage Program. 25 p.

Lightfoot & Muldavin Associates, Environmental Consultants (David Lightfoot and Esteban Muldavin). 1990. Biological clearance survey of the GAM-83 site, White Sands Missile Range, New Mexico. 2 June 1990. 16 pp.

Choquenot, D., B. Kay, and B. Lukins. 1990. An evaluation of warfarin for the control of feral pigs. J. Wildl. Manage. 54:353-359.

Hays, R.L., and A.H. Farmer. 1990. Effects of the CRP on wildlife habitat: emergency haying in the Midwest and pine plantings in the Southeast. Transactions of the North American Wildlife and Natural Resources Conference 55:30-39.

Knight, R. L., and D. P. Anderson. 1990. Effects of supplemental feeding on an avian scavenging guild. Wildl. Soc. Bull. 18:388-394.

Nichols, J. D., J. A. Spendelow, and J. E. Hines. 1990. Capture-recapture estimation of prebreeding survival rate for birds exhibiting delayed maturation. J. Field Ornithology 61:347-354.

Smith, H. M., C. E. Bock, and J. H. Bock. 1990. Notes on reproduction and coloration in the bunchgrass lizard, Sceloporus scalaris, in southeastern Arizona. Bull. Maryland Herp. Soc. 26(2):64-67.

Carraway, L. N. 1990. A morphologic and morphometric analysis of the "Sorex vagrans species complex" in the Pacific coast region. Texas Tech Univ. Mus. Spec. Publ. (32):1-76.

Unknown (1990). Map for Survey for Hedeoma apiculatum, Aster laevis, Corypantha sneeedii. Guadalupe RD, Lincoln NF, USFS.

Kelly, S.K. (1990) Unpublished Letter to Regional Forester Subject: Owl Data Forms and Narrative (1989 and 1990). Silver City Ranger District, Gila National Forest, USFS. 81 p.

Unknown (1990) Final Report for Mexican Spotted Owl Survey, Aldo Leopold Wilderness, Contract Number 53-8399-0-0059. Retrieved from Silver City Ranger District, Gila National Forest, USFS. 22 p.

Daly, L. Parker, M. (1990) 1990 Mexican Spotted Owl Inventory Form. Sandia Ranger District, Cibola National Forest, USFS. 28 p.

Sivinski, B. and A. Cully. 1990. Element occurrence record for Coryphantha duncanii at Mud Mountain, NM.

DeBruin, E. 1990. Field map for Fillmore Canyon survey, May 1990.

Staicer, C.A. 1989. Characteristics, use, and significance of two singing behaviors in Grace's Warbler (DENDROICA GRACIAE). Auk 106:49-63.

Zoellick, B. W., N. S. Smith, and R. S. Henry. 1989. Habitat use and movements of desert kit foxes in western Arizona. J. Wildl. Manage. 53:955-961.

Bisbal, F. J. 1989. Distribution and habitat association of the carnivores in Venezuela, Pages 339-361 in K. H. Redford, and J. F. Eisenberg, eds. Advances in Neotropical mammalogy. Gainesville, Florida, Sandhill Crane Press.

Douglas, M. E., W. L. Minckley, and H. M. Tyus. 1989. Qualitative characters, identification of Colorado River chubs (Cyprinidae: genus Gila) and the "art of seeing well." Copeia 1989:653-662.

Hone, J., and C. P. Stone. 1989. A comparison and evaluation of feral pig management in two national parks. Wildl. Soc. Bull. 17:419-425.

Miyamoto, M. M., S. M. Tanhauser, and P. J. Laipis. 1989. Systematic relationships in the artiodactyl tribe Bovini (family Bovidae), as determined from mitochondrial DNA sequences. Syst. Zool. 38:342-349.

Abarca, F.J. 1989. Potential food habit overlap between spikedace (Meda fulgida) and red shiner (Cyprinella lutrensis). Arizona State University, Tempe. M.S. thesis.