Reebs, S. G. 1987. Roost characteristics and roosting behavior of black-billed magpies, PICA PICA, in Edmonton, Alberta. Canadian Field-Nat. 101:519-525.

U.S. Fish and Wildlife Service (USFWS). 6 October 1987. Proposed reclassification of the Gila trout (Salmo gilae) [sic] from endangered to threatened. Federal Register 52:37424-37427.

Facey, D. E., and M. J. Van Den Avyle. 1987. Species profiles: life histories and environmental requirements of coastal fishes and invertebrates (North Atlantic): American eel. U.S. Fish and Wildlife Service. Biological Report 82(11.74). 28 pp.

Sanders, R.W. 1987. Taxonomy of Agastache section Brittonastrum (Lamiaceae-Nepeteae). Systematic Botany Monographs Vol. 15. 92 pp.

Briggs, J. L., Sr. 1987. Breeding biology of the Cascade frog, Rana cascadae, with comparisons to R. aurora and R. pretiosa. Copeia 1987:241-245.

Hoagland, K.E., and G.M. Davis. 1987. The succineid snail fauna of Chittenango Falls, New York: taxonomic status with comparisons to other revelant taxa. Proceedings of The Academy of Natural Sciences of Philadephia 139:465-526.

Matthews, W. J. 1987. Geographic variation in Cyprinella lutrensis (Pisces: Cyprinidae) in the United States, with notes on Cyprinella lepida. Copeia 1987:616-637.

Unitt, P. 1987. Empidonax traillii extimus: an endangered subspecies. Western Birds 18:137-162.

Dunmire, W. and M. Toll. 1987. Establishment Record for Largo Mesa Research Natural Area, Gila National Forest. US Forest Service, 75 p.

Marks, J. S., and V. S. Marks. 1987. Habitat selection by Columbian Sharp-tailed Grouse in west-central Idaho. U.S. Bureau of Land Management, Boise District, Boise, Idaho.

Dunmire, W. and M. Toll. 1987. Establishment Record for Upper McKittrick Research Natural Area, Lincoln National Forest. US Forest Service, 127 p.

Sigler, W. F., and J. W. Sigler. 1987. Fishes of the Great Basin: a natural history. University of Nevada Press, Reno, Nevada. xvi + 425 pp.

Knight, P.J., and A.C. Cully. 1987. Status report on Senecio quaerens. Unpublished report for US Fish & Wildlife, Albuq. NM. 17 pp.

Merritt, J. F. 1987. Guide to the mammals of Pennsylvania. University of Pittsburgh, Pittsburgh, PA.

Carlson, D. C. and E. M. White. 1987. Effects of prairie dogs on mound soils. Soil Sci. Soc. Am. J. 51:389-3.

Gwynn, J. V. 1987. Wildlife disease investigation. Pages 98-106 in Virginia Wildlife Investigations. Virginia Department of Game and Inland Fish., Richmond, Virginia.

Manuwal, D.A., M.H. Huff, M.R. Bauer, C.B. Chappell, and K. Hegstad. 1987. Summer birds of the upper subalpine zone of Mount Adams, Mount Rainier, and Mount St. Helens, Washington. Northwest Science 61:82-92.

Ryan, M.R., and R.B. Renken. 1987. Habitat use by breeding Willets in the northern Great Plains. Wilson Bull. 99(2):175-189.

White, D. H., and J. T. Seginak. 1987. Cave gate designs for use in protecting endangered bats. Wildlife Society Bull. 15:445-449.

National Audubon Society. 1987. Eighty-seventh Christmas Bird Count. Audubon Field Notes 41:579-1321.

Rappole, J. H., and A. R. Tipton. 1987. An assessment of potentially endangered mammals in Texas. Unpublished report to the U.S. Fish and Wildlife Service, Albuquerque, New Mexico. Cooperative Agreement 14-16-0002-86-927. pp. 121-124.

Piehler, K.G. 1987. Habitat relationships of three grassland sparrow species on reclaimed surface mines in Pennsylvania. M.S. thesis. West Virginia University, Morgantown, WV. 78 pp.

Barneby, R.C., and R. Spellenberg. 1987. A new species of Astragalus (Leguminosae) from northwestern New Mexico and adjacent Arizona. Brittonia 39: 188-191.

DeBenedictis, P.A. 1987. Gleanings from the technical literature. Birding 19(1):47-49.

Holt, D. W. 1987. Short-eared owl, ASIO FLAMMEUS, predation on Leach's storm-petrels, OCEANODROMA LEUCORHOA, in Massachusetts. Canadian Field-Nat. 101:448-450.

Millsap, B. A. 1987. Summer concentration of American swallow-tailed kites at Lake Okeechobee, Florida, with comments on post-breeding movements. Florida Field Naturalist 15:85-92.

Prescott, D. R. C. 1987. Territorial responses to song playback in allopatric and sympatric populations of alder (EMPIDONAX ALNORUM) and willow (E. TRAILLII) flycatchers. Wilson Bull. 99(4):611-619.

Thomas, J. E. 1987. Northern harrier nest in Delaware. Delmarva Ornithol. 20:16.

Hemstrom, M. A., S. E. Logan, and W. Pavlat. 1987. Plant association and management guide, Willamette National Forest. USDA Forest Service Report R6-Ecol 257-B-86. Pacific Northwest Region, Portland, OR. 312 pp.

Clark, R. G., and P. J. Weatherhead. 1987. Influence of population size on habitat use by territorial male red-winged blackbirds in agricultural landscapes. Auk 104: 311-315.

Fuller, T. K., and J. A. Markl. 1987. Beaver, Castor canadensis, colony density in the Bearville Study Area, northcentral Minnesota. Canadian Field-Nat. 101:597-598.h

Laymon, S. A., and M. D. Halterman. 1987b. Can the western subspecies of Yellow-billed Cuckoo be saved from extinction? Western Birds 18:19-25.

Reynolds, R.T., and B.D. Linkhart. 1987a. Fidelity to territory and mate in flammulated owls. Pages 234-238 in R.W. Nero, R.J. Clark, R.J. Knapton, and R.H. Hamre, editors. Biology and conservation of northern forest owls. USDA Forest Service, Gen. Tech.

Wierenga, P.J., J.M.H. Hendrickx, M.H. Nash, J. Ludwig, and L.A. Daugherty. 1987. Variation of soil and vegetation with distance along a transect in the Chihuahuan Desert. Journal of Arid Environments. 13:53-63.

Findley, J. S. 1987. The natural history of New Mexican mammals. University of New Mexico Press, Albuquerque. 164 pp.

Giesen, K. M. 1987. Population characteristics and habitat use by Columbian Sharp-tailed Grouse in northwest Colorado. Final Report, Colorado Division of Wildlife Fed. Aid Project W-1 52-R.

Taylor, D.W. 1987. Fresh-water molluscs from New Mexico and vicinity. New Mexico Bureau of Mines and Mineral Resources, Bulletin 116:1-50.

Ahlquist, J. E., et al. 1987. Divergence of the single-copy DNA sequences of the western grebe (AECHMOPHORUS OCCIDENTALIS) and Clark's grebe (A. CLARKII), as indicated by DNA-DNA hybridization. Postilla No. 200.

Cincotta, R. P., D. W. Uresk, and R. M. Hansen. 1987. Demography of black-tailed prairie dog populations reoccupy-ing site treated with rodenticide. Great Basin Nat. 47:339-343.

Huntly, N., and R. S. Inouye. 1987. Small mammal populations of an old-field chronosequence: successional patterns and associations with vegetation. Journal of Mammalogy 68:739-745.

Millsap, B. A., and P. A. Millsap. 1987. Burrow nesting by common barn-owls in north central Colorado. Condor 89:668-70.

U.S. Fish and Wildlife Service (USFWS). 6 July 1987. Proposed determination of endangered status for two long-nosed bats. Federal Register 52:25271-25275.

Santa Fe National Forest. 1987. Environmental Impact Statement, Santa Fe National Forest, Santa Fe Watershed Research Natural Area. US Forest Service, 3 p.

Moncrief, N. D. 1987. Geographic variation in morphology and allozymes within tree squirrels, SCIURUS NIGER and S. CAROLINENSIS of the lower Mississippi River Valley. Ph.D. dissertation, Louisiana State University, Baton Rouge.

Poole, J.M., and D.H. Riskind. 1987. Endangered, threatened, or protected native plants of Texas. Texas Parks and Wildlife Dep't., Austin. Looseleaf binder, no pagination.

Lincoln National Forest. 1987. Establishment Record for Haynes Canyon Research Natural Area. US Forest Service, 63 p.

Sousa, P. J. 1987. Habitat suitability index models: hairy woodpecker. U. S. Fish Wildl. Serv. Biol. Rep. 82(10.146). 19 pp.

Larsen, J.C. 1987. Short-eared owl breeding survey. California Department of Fish and Game, Nongame Wildlife Investigation. Unpublished report. Project No. W-065-R-4, Job No. II-13.

National Geographic Society (NGS). 1987. Field guide to the birds of North America. Second edition. National Geographic Society, Washington, D.C.

Adam, C. I. G. 1987. Status of the eastern screech owl in Saskatchewan with reference to adjacent areas. Pp. 268-276 in Nero, R. W., et al., eds. Biology and conservation of northern forest owls. USDA For. Serv. Gen. Tech. Rep. RM-142

Cochran, J. F., and S. H. Anderson. 1987. Comparison of habitat attributes at sites of stable and declining long- billed curlew populations. Great Basin Nat. 47:459-466.

Hafner, M. S., et al. 1987. Macrogeographic patterns of genetic differentiation in the pocket gopher THOMOMYS UMBRINUS. Syst. Zool. 36:18-34.

McNair, D. B. 1987. Egg data slips-are they useful for information on egg-laying dates and clutch size? Condor 89:369-76.

Schmutz, J. K., and R. W. Fyfe. 1987. Migration and mortality of Alberta ferruginous hawks. Condor 89:169-174.

Wiens, J.A., J.T. Rotenberry, and B. Van Horne. 1987. Habitat occupancy patterns of North American shrubsteppe birds: the effect of spatial scale. Oikos 48:132-147.

Cooper, S. V., K. E. Neiman, R. Steele, and D. W. Roberts. 1987. Forest habitat types of northern Idaho: A second approximation. USDA Forest Service, Intermountain Research Station. General Technical Report INT-236. Ogden, UT. 135 pp.

Runde, D. E. 1987. Population dynamics, habitat use and movement patterns of the Prairie Falcon (FALCO MEXICANUS). PhD Dissertation, Univ. Wyoming, Laramie. 166 pp.

Akroyd, B. 1987. Memorandum, Department of Game and Fish. Subject: Surveys on Rio Del Medio and Sawmill Creek, Questa Ranger District, Carson National Forest.

Beezley, J.A. and J. P. Rieger. 1987. Least Bell's Vireo management by cowbird trapping. Western Birds 18:55-61.

de Almeida, M. H. 1987. Nuisance furbearer damage control in urban and suburban areas. Pages 996-1006 in M. Novak et al., editors. Wild furbearer management and conservation in North America. Ontario Ministry of Natural Resources.