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McAnnis, D.M. 1990. Home range, activity budgets, and habitat use of Ferruginous Hawks (BUTEO REGALIS) breeding in southwest Idaho. M.S. Thesis, Boise State University, Boise, ID. 81 pp.

Painter, C.W. 1990. Field trip into the Animas Mountains, Gray Ranch, Hidalgo County, New Mexico. Unpub. manuscript to the Nature Conservancy NMNHP. 4 pp.

Lowe, C. Dept. of Ecology and evolutionary Biology, University of Arizona, Tucson, AZ. (602) 621-3187.

Douglas, M. E. 1990. Assistant research professor. Arizona State University, Tempe, AZ.

Bildstein, K. L., et al. 1990. Freshwater wetlands, rainfall, and the breeding ecology of white ibises in coastal South Carolina. Wilson Bull. 102:84-98.

Deisch, M. S., D. W. Uresk, and R. L. Linder. 1990. Effects of prairie dog rodenticides on deer mice in western South Dakota. Great Basin Naturalist 50:347-353.

Hamer, D., and S. Herrero. 1990. Courtship and use of mating areas by grizzly bears in the Front Ranges of Banff National Park, Alberta. Canaidan J. Zoology 68:2695-2697.

Keppie, D. M., and J. Towers. 1990. Using phenology to predict commencement of nesting of female spruce grouse (Dendragapus canadensis). Am. Midl. Nat. 123:164-170.

Newton, I., I. Wyllie, and P. Freestone. 1990. Rodenticides in British barn owls. Environmental Pollution 68:101-117.

Sweet, S. S., and W. S. Parker. 1990. Pituophis melanoleucus. Catalogue of American Amphibians and Reptiles 474.1-474.8.

Ainley, D. G., C. A. Ribic, and R. C. Wood. 1990. A demographic study of the south polar skua CATHARACTA MACCORMICKI at Cape Crozier. J. Anim. Ecol. 59:1-20.

Folk, M. J., and T. C. Tacha. 1990. Sandhill crane roost site characteristics in the North Platte River Valley. J. Wildl. Manage. 54:480-486.

Horner, M. A., and R. A. Powell. 1990. Internal structure of home ranges of black bears and analyses of home-range overlap. J. Mammalogy 71:402-410.

Myers, J. P., et al. 1990. Migration routes of New World sanderlings (CALIDRIS ALBA). Auk 107:172-180.

Rosenburg, C. P. 1990b. Barn owl nest site and nest box monitoring program. Pages 76-81 in Virginia Nongame and Endangered Wildlife Investigations, 1990 Annual Report. Virginia Department Game and Inland Fish. Richmond, Virginia.

Taylor, C. M., and R. J. Miller. 1990. Reproductive ecology and population structure of the plains minnow, Hybognathus placitus (Pisces: Cyprinidae), in central Oklahoma. American Midland Naturalist 123:32-39.

Sibley, C.G., and B.L. Monroe, Jr. 1990. Distribution and Taxonomy of Birds of the World. Yale University Press, New Haven, CT. xxiv + 1111 pp.

Moseley, R. and C. Groves. 1990. Rare, threatened and endangered plants and animals of Idaho. Natural Heritage Section, Nongame and Endangered Wildlife Program, Idaho Dept. of Fish and Game. 33 pp.

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.

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.

Pattee, O. H., et al. 1990. Lead hazards within the range of the California condor. Condor 92:931-937.

Solis, D. M., Jr., and R. J. Gutierrez. 1990. Summer habitat ecology of northern spotted owls in northwestern California. Condor 92:739-748.

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.

Blankenship, E. L., T. W. Bryan, and S. P. Jacobsen. 1990. A method for tracking tortoises using fluorescent powder. Herpetol. Rev. 21:88-89.

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

Hanowski, J. M., and G. J. Niemi. 1990. An approach for quantifying habitat characteristics for rare wetland birds. Pages 51-56 in Mitchell et al., editors. Ecosystem management: rare species and significant habitats. New York State Museum Bulletin 471.

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.

Nesbitt, S. A., and K. S. Williams. 1990. Home range and habitat use of Florida sandhill cranes. Journal of Wildlife Management 54:92-96.

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.

Varela-Romero, A., L. Juarez-Romero and J. Campoy-Favela. 1990 (unpub. draft). Lospeces dulceacuicolas de Sonora. Centro Ecologico de Sonora, A. P. 1495, Hermosillo, Sonora, Mexico.

Cully, A. and R. Sivinski. 1990. Monitoring endangered plants. Performance report for 1989-1990 to U.S. Fish and Wildlife Service, Albuquerque, NM.

Mongold, R. 1990. Bird survey forms from Roger Mongold. Includes Filmore canyon, Dripping springs and Soladad arroyo. Dona Ana Co., NM. . 9 p.

Christiansen, J. L., B. J. Gallaway, and J. W. Bickham. 1990. Population estimates and geographic distribution of the yellow mud turtle (Kinosternon flavescens) in Iowa. Journal of the Iowa Academy of Science 97:105-108.

Heinrich, J. W., and S. R. Craven. 1990. Evaluation of three damage abatement techniques for Canada geese. Wildl. Soc. Bull. 18:405-410.