Browne, R.A., C.R. Griffin, P.R. Chang, M. Hubley, and A.E. Martin. 1993. Genetic divergence among populations of the Hawaiian Duck, Laysan Duck, and Mallard. Auk 110:49-56.

Girard, G. T., B. D. Anderson, and T. A. De Laney. 1993. Managing conflicts with animal activists: white-tailed deer and Illinois nature reserves. Natural Areas Journal 13:10-17.

Silva, J. 1993. Mexican Spotted Owl survey report: Rio Puerco Resource Area (Cuba Area). Bureau of Land Management.

Marti, C.D., K. Steenhof, M.N. Kochert, and J.S. Marks. 1993. Community trophic structure: the roles of diet, body size, and activity time in vertebrate predators. Oikos. 67: 6-18.

Schwalbe, C. R. 1993. Status of amphibians in Arizona. Park Science 13(4):10.

Cadman, M. D. 1993. Status report on the Northern Harrier Circus cyaneus in Canada. Committee on the Status of Endangered Wildlife in Canada (COSEWIC), Ottawa, ON. 35 pp.

Westworth, D. A. and E. S. Telfer. 1993. Summer and winter bird populations associated with five age-classes of aspen forest in Alberta. Canada Journal of Forestry Research 23:1830-1836.

Gardner, K. Burns, B. (1993) 1993 Mexican Spotted Owl Daytime Follow-up Visit Forms. Silver City Ranger District, Gila National Forest, USFS. 11 p.

McMillan, K. (1993) Information Survey Data for U.S. Forest Service Habitat Conservation Assessment, Inland Cutthroat Trout. Retrieved from Regional Office, USFS. 7 p.

Steigman, K.L. 1993. Nesting ecology of the Dickcissel (SPIZA AMERICANA) on a tallgrass prairie relict in north central Texas. Ph.D. dissertation. University of North Texas, Denton, TX. 133 pp.

Sedgwick, J.A. 1993b. Dusky Flycatcher (EMPIDONAX OBERHOLSERI). In A. Poole and F. Gill, editors, The Birds of North America, No. 78. Academy of Natural Sciences, Philadelphia, and American Ornithologists' Union, Washington, DC. 20 pp.

Brown, D. E., A. Sands, S. Clubine, and C. E. Braun. 1993. Grazing and range management. Proceedings of the National Quail Symposium III:176-177.

Dzus, E., and J. Gerrard. 1993. Factors influencing bald eagle densities in northcentral Saskatchewan. J. Wildlife Management 57:771-778.

Leif, A. P. and L. M. Smith. 1993. Winter diet quality, gut morphology and condition of northern bobwhite and scaled quail in west Texas. Journal of Field Ornithology 64:527-538.

Schroeder, M. A., and C. E. Braun. 1993. Partial migration in a population of greater prairie-chickens in northeastern Colorado. Auk 110:21-28.

Bowerman, W. W., T. G. Grubb, J. P. Giesy, A. J. Bath, and G. A. Dawson. 1993. Population composition and perching habitat of wintering Bald Eagles in northcentral Michigan. Canadian Field Naturalist 107: 273- 278.

Heske, E. J., J. H. Brown, and Q. Guo. 1993. Effects of kangaroo rat exclusion on vegetation structure and plant species divrsity in the Chihuahuan Desert. Oecologia 95:520-524.

O'Donoghue, M., and S. Stuart. 1993. Hare-raising encounters. Natural History 2/93, pp. 26-33.

Thurber, J. M., and R. O. Peterson. 1993. Effects of population density and pack size on the foraging ecology of gray wolves. J. Mammalogy 74:879-889.

Black, C. 1993. Unpublished field surveys for Strix occidentalis lucida with maps, for NMNHP. Contract no 93-516-65, April-June 1993.

Hunt, L. E. 1993. Diet and habitat use of nesting Prairie Falcons (FALCO MEXICANUS) in an agricultural landscape in southern Alberta. MS Thesis, University of Alberta, Edmonton, Alberta. 61 pp.

McMillan, K. (1993) Information Survey Data for U.S. Forest Service Habitat Conservation Assessment, Inland Cutthroat Trout. Retrieved from Regional Office, USFS. 7 p.

Unknown, 1993. 1993 Year-End MSO Report, Jicarilla Ranger District, Carson National Forest. USFS 15 p.

Rhoads, A.F., and W.M. Klein, Jr. 1993. The vascular flora of Pennsylvania: Annotated checklist and atlas. American Philosophical Society, Philadelphia, PA. 636 pp.

Ballen, M. 1993. Final report on Mexican Spotted Owl inventory- 1993 for the Gila National Forest, Bull Camp survey area, Quemado Ranger District; Contract # 43-8399-3-1220. 2 p.

1993 Northern Goshawk Annual Report. Smokey Bear Ranger Districts. Lincoln National Forest. Prepared by Larry Paul, Barbara Rasch, Reviewed by Danney Salas.

Mehlhop, P. 1993. Unpublished letter to Ken Bishop, Carson Cational Forest, concerning a Mexican Spotted Owl sighting. Multiple forms included. New Mexico Natural Heritage Program, UNM. 20 p.

American Ornithologists' Union (AOU). 1993. Thirty-ninth supplement to the American Ornithologists' Union Check-list of North American Birds. Auk 110:675-82.

Ratcliffe, D. 1993. The peregrine falcon. Second edition. Academic Press, Inc., San Diego. 454 pp.

Carey, C. 1993. Hypothesis concerning the causes of the disappearance of boreal toads from the mountains of Colorado. Conservation Biology 7(2):355-362.

Brown, B.T. 1993. Bell's Vireo (VIREO BELLII). In A. Poole, P. Stettenheim, and F. Gill, editors, The Birds of North America, No. 35. Academy of Natural Sciences, Philadelphia, and American Ornithologists' Union, Washington, DC. 20 pp.

U.S. Fish and Wildlife Service (USFWS). 1993. Final rule to list the Mexican spotted owl as a threatened species. Federal Register 58(49):14248-14271. 16 March 1993.

Pace, R. M., III, and G. W. Wood. 1993. Use of daytime microhabitat by wintering woodcocks in coastal South Carolina. Pages 66-74 in J. R. Longcore and G. F. Sepik, editors. Proceedings of the eighth American woodcock symposium. U.S. Fish and Wildlife Ser

Burton, J. (1993) Unpublished Letter to L. Paul Including Multiple Documents About Pyrogulopsis pecosensis. Guadalupe Ranger District, Lincoln National Forest, USFS. 5 p.

Harlequin Duck Working Group. 1993. Status of harlequin ducks (HISTRIONICUS HISTRIONICUS) in North America. iii + 83 pp.

Trail, P. W., and L. F. Baptista. 1993. The impact of brown-headed cowbird parasitism on populations of the Nuttall's white-crowned sparrow. Conservation Biology 7:309-

McMillan, K. (1993) Information Survey Data for U.S. Forest Service Habitat Conservation Assessment, Inland Cutthroat Trout. Retrieved from Regional Office, USFS. 7 p.

Rivera, J. Ward, R. Ford-Schmid, R. (1993) 1993 Mexican Spotted Owl Daytime Follow-up Visit Form. Retrieved from Silver City Ranger District, Gila National Forest,USFS. 24 p.

Muldavin, E. 1993. Melrose vegetation Survey. New Mexico Natural Heritage Program

Capel, S., J. A. Crawford, R. J. Robel, L. W. Burger, Jr., and N. W. Sotherton. 1993. Agricultural practices and pesticides. Proceedings of the National Quail Symposium III:172-173.

Hart, J. A., G. L. Kirkland, Jr., and S. C. Grossman. 1993. Relative abundance and habitat use by tree bats, LASIURUS spp., in southcentral Pennsylvania. Can. Field-Nat. 107:208-212.

Brown, B. 1993. Memorandum to Alan and Narca of Animas Foundation regarding sighting of Heliomaster constantii on August 25, 1993.

Marinelli, L., and F. Messier. 1993. Space use and the social system of muskrats. Can. J. Zool. 71:869-875.

Sepik, G. F., and E. L. Derleth. 1993b. Habitat use, home range size, and patterns of moves of the American woodcock in Maine. Pages 41-49 in J. R. Longcore and G. F. Sepik, editors. Proceedings of the eighth American woodcock symposium. U.S. Fish and Wil

Carisch, M. (1993) 1993 Mexican Spotted Owl Inventory Form. Silver City Ranger District, Gila National Forest, USFS. 2 p.

Whiting, M.J., J.R. Dixon and R.C. Murray. 1993. Spatial distribution of a population of Texas horned lizards (Phrynosoma cornutum: Phrynosomatidae) relative to habitat and prey. Southwest. Nat. 38(2):150-154

Blair, G. S. and G. Servheen. 1993. Species conservation plan for the white-headed woodpecker (PICOIDES ALBOLARVATUS). USDA Forest Service Region 1 and Idaho Dept. of Fish and Game.

McMillan, K. (1993) Information Survey Data for U.S. Forest Service Habitat Assessment, Inland Cutthroat Trout. Retrieved from Regional Office, USFS. 7 p.

Unknown, 1993. BISON-M Draft - Taxonomy Species Sparrow, Baird's. Audobon authority. USFS

Senesac, P. 1993. Project tanager: reference booklet. Cornell Laboratory of Ornithology, Ithaca, New York.

Bull, E. L., and R. C. Beckwith. 1993. Diet and foraging behavior of Vaux's swifts in northeastern Oregon. Condor 95:1016-1023.

Engilis, A., Jr., and T. K. Pratt. 1993. Status and population trends of Hawaii's native waterbirds, 1977-1987. Wilson Bull. 105:142-158.

Licht, D. S., and K. D. Sanchez. 1993. Association of black-tailed prairie dog colonies with cattle point attractants in the northern Great Plains. Great Basin Nat. 53:385-389.

Serfass, T. L., R. P. Brooks, and L. M. Rymon. 1993. Evidence of long-term survival and reproduction by translocated river otters, LUTRA CANADENSIS. Can. Field-Nat. 107:59-63.

Groth, J. G. 1993b. Evolutionary differentiation in morphology, vocalizations, and allozymes among nomadic sibling species in the North American red crossbill (LOXIA CURVIROSTRA) complex. Univ. California Publ. Zool. 127. 143 pp.

Brown, B. T. 1993. Winter foraging ecology of bald eagles in Arizona. Condor 95:132-138.

Howes, L.-A., and W. A. Montevecchi. 1993. Population trends and interactions among terns and gulls in Gros Morne National Park, Newfoundland. Can. J. Zool. 71:1516-1520.

Peterjohn, B.G., and J.R. Sauer. 1993. North American breeding bird survey annual summary 1990-1991. Bird Populations 1:1-15.

Van Horn, R.C. 1993. A summary of reproductive success and mortality in a disturbed Ferruginous Hawk (BUTEO REGALIS) population in northcentral Montana. Journal of Raptor Research 27:94.

Bogan, M.A. 1993. 1993 capture summary for San Andres National Wildlife Refuge (SANWR). 10 pp.