Dubec, L. J., W. B. Krohn, and R. B. Owen, Jr. 1990. Predicting occurrence of river otters by habitat on Mount Desert Island, Maine. J. Wildl. Manage. 54:594-599.

Johnson, C. A., and R. J. Naiman. 1990. Aquatic patch creation in relation to beaver population trends. Ecology 71:1617-1621.

Peakall, D. B. 1990. Prospects for the peregrine falcon, FALCO PEREGRINUS, in the nineties. Canadian Field-Naturalist 104:168-173.

Swengel, S. R. 1990. How to find Saw-whet Owls. Bird Watcher's Digest 12:68-75.

Witmer, G., and T. A. O'Neil. 1990. Assessing cumulative impacts to wintering bald eagles in western Washington. Pages 144-150 in Mitchell et al., eds. Ecosystem management: rare species and significant habitats. New York State Museum Bull. 471.

Department of the Army, U.S. Army White Sands Missile Range, New Mexico. 1990. Addendum Life Cycle Environmental Assessment, XM135 Binary Chemical Warhead for the MLRS, Addendum 3. (Date-stamped) 22 February 1990.

Sansom, L. (1990) Sophora gypsophila var. guadalupensis Survey Report. Guadalupe Ranger District, Lincoln National Forest, USFS. 1 p.

Abarca, F. J. 1990. Graduate student. Arizona State University. Conversation with S. P. Vives. March 28, 1990.

Bollinger, E. K., P. B. Bollinger, and T. A. Gavin. 1990. Effects of hay-cropping on eastern populations of the bobolink. Wildl. Soc. Bull. 18:142-150.

Engler, J. 1990. Status of the trumpeter swan at Fish Springs National Wildlife Refuge. Utah Birds 6:1-12.

Holroyd, G. L., and U. Banasch. 1990. The reintroduction of the peregrine falcon, Falco peregrinus anatum, into southern Canada. Canadian Field-Naturalist 104:203-208.

Knopf, F.L., J.A. Sedgwick, and D.B. Inkley. 1990. Regional correspondence among shrubsteppe bird habitats. Condor 92:45-53.

Price, R. M. 1990. Bogertophis subocularis. Catalogue of American Amphibians and Reptiles 497.1-497.2.

Walker, J. M., et al. 1990. Hybridization between all-female Cnemidophorus tesselatus and gonochoristic Cnemidophorus sexlineatus. J. Herpetol. 24:388-396.

Manley, T. and M. Wood. 1990. The status of Columbian sharp-tailed grouse on the Tobacco Plain, Eureka, Montana. Final report. MDFWP, Kalispell. 25 pp.

Bechard, M. J., R. L. Knight, D. G. Smith, and R. E. Fitzner. 1990. Nest sites and habitats of sympatric hawks (BUTEO spp.) in Washington. J. Field Ornithol. 61:159-170.

Chester, D. N., et al. 1990. Habitat use by nonbreeding bald eagles in North Carolina. J. Wildlife Management 54:223-234.

U.S. Fish and Wildlife Service (USFWS). 22 May 1990. Proposal to determine the razorback sucker (Xyrauchen texanus) to be an endangered species. Federal Register 55(99):21154-21161.

Jones, M. T., and R. E. Mirarchi. 1990. Habitats used by common ground-doves in southern Alabama. Wilson Bull. 102:137-139.

Ortega, J. C. 1990a. Home-range size of adult rock squirrels (SPERMOPHILUS VARIEGATUS) in southeastern Arizona. J. Mamm. 71:171-176.

Serie, J. R., and L. M. Cowardin. 1990. Use of social indices to predict reproductive success in canvasbacks. J. Wildl. Manage. 54:66-72.

Webb, R. G. 1990. Trionyx. Cat. Am. Amph. Rep. 487.1-487.7.

Droege, S., and J.R. Sauer. 1990. North American Breeding Bird Survey, annual summary, 1989. U.S. Fish and Wildlife Service, Biological Report 90(8). 22 pp.

Zeiner, D. C., W. F. Laudenslayer Jr., and K. E. Mayer (editors). 1990a. California's Wildlife. Vol. 2. Birds. California Statewide Wildlife Habitat Relat. System, California. Resources Agency, Dept. Fish and Game, Sacramento, California.

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

New Mexico Department of Game and Fish Endangered Species Program. 1990. Checklist of the Native Mammals of New Mexico.

Naumann, T. 1990. Status Report for Astragalus ripleyi. Unpublished report. June 29. Colorado Natural Areas Program, Division of Parks and Outdoor Recreation, Denver, Colorado, USA.

Balgooyen, T. G. 1990. Orientation of American kestrel nest cavities: revisited. J. Raptor Res. 24:27-28.

Cink, C. L. 1990. Snake predation on Chimney Swift nestlings. Journal of Field Ornithology 61:288-289.

Intress, C., and T. L. Best. 1990. Dipodomys panamintinus. Am. Soc. Mamm., Mammalian Species No. 354:1-7.

Lieb, C. S. 1990. Eumeces tetragrammus. Cat. Am. Amph. Rep. 492.1-492.4.

Nudds, T. D. 1990. Retroductive logic in retrospect: the ecological effects of meningeal worms. J. Wildl. Manage. 54:396-402.

Tanner, W. W. 1990. Thamnophis rufipunctatus. Cat. Am. Amph. Rep. 505.1-505.2.

Ransome, R. 1990. The natural history of hibernating bats. Christopher Helm, London. xxi + 235 pp.

Karen Lightfoot and Robert Sivinski 1990. Survey reports for Haplopappus microcephala (Lorandersonia microcephala) and Astragalus kerrii. 186p.

Lindquist, L. (1990) Unpublished letter to Ms. Felicite Wilson, regarding water quality for a stretch of El Rito Creek. Includes water quality and electrofishing results for the creek. Carson Supervisor's Office, Carson National Forest, USFS. 8 p.

Lightfoot & Muldavin Associates, Environmental Consultants. 1990. Biological clearance survey of the GAM-83 site, White Sands Missile Range, New Mexico. Addendum: borrow gravel pit survey and biological assessment of Neolloydia intertexta. 18 June 1990. 6

Bureau of Land Management (BLM). 1990. Working toward recovery. Bureau of Land Management, Montana/Dakotas.

Department of the Air Force. 1990. Draft, Dynamic Coherent Measurement System (DYCOMS) environmental impact statement (PDEIS)..

Anderson, L.E., H.A. Crum, and W.R. Buck. 1990. List of the mosses of North America north of Mexico. The Bryologist 93(4):448-499.

Ellis, P. M., and J. D. Okill. 1990. Breeding ecology of the merlin FALCO COLUMBARIUS in Shetland. Bird Study 37:101-110.

Karp, C. A., and H. M. Tyus. 1990. Behavioral interactions between young Colorado squawfish and six fish species. Copeia 1990(1):25-34.

Perrigo, G., et al. 1990. Spring migration corridor of golden-winged warblers in Tamaulipas, Mexico. Am. Birds 44:28.

Swihart, R. K. 1990. Quebracho, thiram, and methiocarb reduce consumption of apple twigs by meadow voles. Wildl. Soc. Bull. 18:162-166.

Dunmire, W.W. 1990. Hedeoma todsenii inventory of Sacramento Mts, Caballo Resource Area, BLM. Unpublished report for BLM by TNC. 11 p + maps + photos.

Scarbrough, L. 1990. Letter to Bob Sivinski regarding locations for three species, ^Coryphantha sneedii, ^Oenothera organensis, and ^Peniocereus greggii. 3 pages included with map.

Brown, B. T. 1990. Nesting common mergansers in Chihuahua, Mexico. Southwest Nat. 35:88-89.

Firchow, K. M., M. R. Vaughan, and W. R. Mytton. 1990. Comparison of aerial survey techniques for pronghorns. Wildl. Soc. Bull. 18:18-23.

Houston, D. B., et al. 1990. Elk in Olympic National Park: will they persist over time? Natural Areas Journal 10:6-11.

Krupa, J.J. 1990. Bufo cognatus. Catalogue of American Amphibians and Reptiles. 457:1-2.

Purcell, K. L. 1990. Mature upper mixed-coniferous forest-montana chaparral. Journal of Field Ornithology (Supplement) 61:60-61.

Waples, R. S. 1990a. Conservation genetics of Pacific salmon. II. Effective population size and the rate of loss of genetic variability. Journal of Heredity 81:267-276.

Sauer, J. R. 1990. Route-regression analysis of scissor-tailed flycatcher population trends. U.S. Fish and Wildlife Service Biological Report 90:160-163.

Bednarz, J.C., T. Hayden and T. Fischer. 1990. The Raptor and Raven Community of Los Medanos Area in Southern New Mexico: A unique and Significant Resource. In Ecosystem Management Bulletin of the 15th annual Natural Areas Conference, No. 471. Albany,

Coker, D. R, and J. L. Confer. 1990. Brown-headed cowbird parasitism on golden-winged and blue-winged warblers. Wilson Bulletin 102:550-552.

Gawlik, D. E., and K. L. Bildstein. 1990. Reproductive success and nesting habitat of loggerhead shrikes in north-central South Carolina. Wilson Bull. 102:37-48.

Kerpez, T. A., and N. S. Smith. 1990b. Nest-site selection and nest-cavity characteristics of Gila woodpeckers and northern flickers. Condor 92:193-198.

Pashley, D. N., and R. B. Hamilton. 1990. Warblers of the West Indies. III. The Lesser Antilles. Caribbean J. Sci. 26:75-97.

Short, L. L., and J. F. M. Horne. 1990b. The ivory-billed woodpecker - the costs of specialization. Pages 93-8 in A. Carlson and G. Allen (editors). Conservation and Management of Woodpecker Populations. Swedish University of Agricultural Sciences, Depart

Welch, B. L., F. J. Wagstaff, and R. L. Williams. 1990. Sage grouse status and recovery plan for Strawberry Valley, Utah. U.S. Forest Serv. Res. Pap. INT-430. 10 pp.