O'Connell, M. W. 1987. Occurrence of the boreal owl in northeastern Washington. Pages 185-188 in Nero, R. W., et al., eds. Biology and conservation of northern forest owls. USDA For. Serv., Gen. Tech. Rep. RM-142.

Seal, U. S., and T. J. Kreeger. 1987. Chemical immobilization of furbearers. Pages 191-215 in M. Novak et al., editors. Wild furbearer management and conservation in North America. Ontario Ministry of Natural Resources.

U.S. Fish and Wildlife Service (USFWS). 23 December 1987. Finding on northern spotted owl petition. Federal Register 52:48552-48554.

U.S. Fish and Wildlife Service. 1987. Final rule to determine Cirsium vinaceum (Sacramento Mountains thistle) to be a threatened species. Federal Register 52(115): 22933-22936.

Cincotta, R.P., D.W. Vresk and R.M. Hansen. 1987. Demography of black-tailed prairie dog populations reoccupying sites treated with rodenticide. Great Basin Naturalist 47(2):339-343.

Fletcher, R. 1987. Willows (Salix) of Arizona and New Mexico. Range Notes No. 4. USDA-Forest Service Range Management Staff, Southwestern Region, Albuquerque, New Mexico. 38 p.

Knight, R. A., and D. Duerve. 1987. Notes on distribution,habitat, and sexual dimorphism of Gerrhonotus kingii (Lacertilia: Anguidae). Southwest. Nat. 32:283-285.

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.

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

Groschupf, K. 1987. Status of the Yellow-billed Cuckoo (COCCYZUS AMERICANUS OCCIDENTALIS) in Arizona and west Texas. USFWS Rep. 20181-86-00731. Phoenix, AZ.

Geissler, P. H., et al. 1987. Mourning dove nesting: seasonal patterns and effects of September hunting. U.S. Fish and Wildlife Service Resource Publication 168. 33 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.

Vogt, T.F. 1987. A preliminary report on threatened or endangered aquatic insects associated with lotic habitats in Illinois. Natural Lands Institute, Rockford, IL. 12pp.

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

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

Garrett, J. M., and D. G. Barker. 1987. A Field Guide to Reptiles and Amphibians of Texas. Texas Monthly Press, Austin, Texas. 225 pp.

Scott Jr., N., C. Ramotnik, M. Altenbach, and B. Smith. 1987. Distribution and ecological requirements of endemic salamanders in relation to forestry management, summary of 1987 activities, Part 2: Santa Fe National Forest. U.S. Fish and Wildlife Service:

Lincoln National Forest. 1987. Map and note from Jeff to John Peterson with Northern Goshawk location and information.

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.

Hubbard, J.P. 1987. The status of the Willow flycatcher in New Mexico. Endangered Species Program, NM Dept. of Game and Fish. 29pp.

Firstencel, H. 1987. The black tern (CHLIDONIAS NIGER Linn.): breeding ecology in upstate New York and results of pesticide residue analysis. M.S. thesis, State Univ. of New York, Rockport. 63 pp.

Finch, D.M., S.H. Anderson, and W.A. Hubert. 1987. Habitat suitability index models: Lark Bunting. U.S. Fish and Wildlife Service, Biological Report 82. 16 pp.

Brennan, L. A., W. M. Block, and R. J. Gutierrez. 1987. Habitat use by mountain quail in northern California. Condor 89:66-74.

Galbraith, D. A., M. W. Chandler, and R. J. Brooks. 1987. The fine structure of home ranges of male Chelydra serpentina: are snapping turtles territorial. Can. J. Zool. 65:2623-2629.

Lim, B. K. 1987. Lepus townsendii. Am. Soc. Mamm., Mammalian Species 288:1-6.

Ogden, J. C., D. A. McCrimmon, Jr., G. T. Bancroft, and B. W. Patty. 1987. Breeding populations of the wood stork in the southeastern United States. Condor 89:752-759.

Servos, M. C. 1987. Summer habitat use by great gray owls in southeastern Manitoba. Pp. 108-114 in Nero, R. W., et al., eds. Biology and conservation of northern forest owls. USDA For. Serv., Gen. Tech. Rep. RM-142.

U.S. Fish and Wildlife Service (USFWS). 2 November 1987. Determination of endangered and threatened status for two populations of roseate tern. Federal Register 52:42064-42068.

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.

Graber, J. W., R. R. Graber, and E. L. Kirk. 1987. Illinois birds: Corvidae. Illinois Nat. Hist. Surv. Biol. Notes No. 126.

Helfer, J. R. 1987. How to Know the grasshoppers, crickets, cockroaches and their allies. Dover Publications, Inc., New York. 363 pp.

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.

Allen, A. W. 1987. Habitat suitability index models: barred owl. U.S. Fish Wildl. Serv. Biol. Rep. 82(10.143). 17 pp.

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

Geluso, K. N., J. S. Altenbach, and R. C. Kerbo. 1987. Bats of Carlsbad Caverns National Park. Natural History Association, Carlsbad, New Mexico. 31 pp.

Akroyd, B, 1987. Memorandum, Department of Game and Fish, Subject: Surveys of West Latir Creek, Rio Del Medio and Rito Primero. Conjillon Ranger District, Carson National Forest, USFS.

Tate, G. R., and S. M. Melvin. 1987. Population dynamics, habitat use, and management needs of the short-eared owl in Massachusetts: summary of 1986 research. Massachusetts Division of Fish and Wildlife, Natural Heritage and Endangered Species Program. Un

McIntosh, L. 1987. Location of monitoring plots, Coryphantha sneedii, Anthony Gap population, Bishops Cap population, Webb Gap population. Copies made from USGS 7.5 quad maps. BLM, Las Cruces District office.

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.