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Morton, E. S., and K. C. Derrickson. 1990. The biological significance of age-specific return schedules in breeding purple martins. Condor 92:1040-1050.

Stromberg, M. R. 1990. Habitat, movements and roost characteristics of Montezuma quail in southeastern Arizona. Condor 92:229-236.

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.

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.

Price, A.H. 1990. Catalogue of American amphibians and reptiles. Society for the Study of Amphibians and Reptiles.

Burns, B. Tudek, B. (1990) Collected Mexican Spotted Owl Forms. Silver City Ranger District, Gila National Forest, USFS. 68 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.

Knapp, M. (1990) Unpublished letter to District Ranger, Subject: Angostura Creek. Retrieved from Regional Office, USFS. 6 p.

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

Maughn, E. 1990. Arizona Cooperative Fish and Wildlife Research unit. University of Arizona, Tucson, AZ.

Larter, N. C., and C. C. Gates. 1990. Home ranges of wood bison in an expanding population. J. Mamm. 71:604-607.

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Noble, D. G. and J. E. Elliott. 1990. Levels of contaminants in Canadian raptors, 1966 to 1988; Effects and temporal trends. Can. Field-Nat. 104:222-243.

Smith, J. P., S. W. Hoffman, J. A. Gessaman. 1990. Regional size differences among fall-migrant accipiters in North America. J. Field Ornithol. 61:192-200.

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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.

Castetter, R. 1990. Photographs of location for Phanerophlebia auriculata and Perityle cernua.

Romme, R. 1990. 1990 Bald Eagle Survey, Lincoln National Forest.

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

Dixon, K. L. 1990. Constancy of margins of the hybrid zone in titmice of the PARUS BICOLOR complex in coastal Texas. Auk 107:184-188.

Jackson, D. D. 1990. Orangetooth is here to stay. Audubon, July 1990, pp. 89-94.

Paton, P. W. C., and Edwards. 1990. Status and nesting ecology of the snowy plover at Great Salt Lake--1990. Utah Birds 6(4):49-66.

Strong, P. I. V. 1990. The suitability of the common loon as an indicator species. Wildl. Soc. Bull. 18:257-261.

Gibbs, J.P., and S.M. Melvin. 1990. An assessment of wading birds and other wetlands avifauna and their habitats in Maine. Maine Department of Inland Fish. and Wildlife, Bangor, Maine. 61 pp. Unpublished report.

California Department of Fish and Game (CDF&G). 1990. 1989 annual report on the status of California's state listed threatened and endangered plants and animals. 188 pp.

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.

Buskirk, J. R. 1990. Geographic distribution: Clemmys marmorata. SSAR Herpetol. Rev. 21(1):26.

Franklin, A. B., et al. 1990. Density of northern spotted owls in northwest California. J. Wildlife Management 54:1-10.

Jayne, P. 1990. Nutria: a menance to Maryland marshes. Tracks 'N Trails 6(1):1.

New Mexico Ornithological Society. 1990. NMOS Field Notes, 3/1/90-5/31/90. NMOS Field Notes. 29(2).

Safina, C. 1990b. Bluefish mediation of foraging competition between roseate and common terns. Ecology 71:1804-1809.

Waples, R. S., and D. J. Teel. 1990. Conservation genetics of Pacific salmon. I. Temporal changes in allele frequency. Conservation Biology 4:144-156.

Owen, R. D., R. K. Chesser, and D. C. Carter. 1990. The systematic status of TADARIDA BRASILIENSIS CYNOCEPHALA and Antillean members of the TADARIDA BRASILIENSIS group, with comments on the generic name RHIZOMOPS LEGENDRE. Occasional Papers of the Museum,

Rosenberg, K.V., R.D. Ohmart, W.C. Hunter, and B.W. Anderson. 1990. Birds of the lower Colorado River valley. University of Arizona Press, Tucson. 464 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.

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

Church, K.E. and W.F. Porter. 1990. Winter and spring habitat use by gray partridge in New York. J. of Wildlife Management 54:653-657.

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.

Hoffman, R. M. 1990. Birds of Wisconsin's deep marshes and shallow open-water communities. Passenger Pigeon 52(3): 259- 272.

LeGrand, H. 1990. Bewick's wren. In Lee, D. S. and J. F. Parnell (eds.). Endangered, threatened, and rare fauna of North Carolina. Part III. A re-evaluation of the birds. Occasional Papers of the NC Biological Survey: 1990-91.

Noon, B., and C. M. Biles. 1990. Mathematical demography of spotted owls in the Pacific Northwest. J. Wildl. Manage. 54:18-27.