Johnston, B. C. 1987. Plant associations of Region Two: Potential plant communities of Wyoming, South Dakota, Nebraska, Colorado, and Kansas. R2-ECOL-87-2. USDA Forest Service, Rocky Mountain Region. Lakewood, CO. 429 pp.

Cully, A., and P.J. Knight. 1987. Status report on Sibara grisea. Report prepared for U.S. Fish and Wildlife Service, Albuquerque, New Mexico.

Boag, D. A., and M. A. Schroeder. 1987. Population fluctuations in spruce grouse: what determines their numbers in spring? Can. J. Zool. 65:2430-2435.

Forbes, M. R. L., and C. D. Ankney. 1987. Hatching asynchrony and food allocation within broods of pied-billed grebes, PODILYMBUS PODICEPS. Canadian Journal of Zoology 65:2872-7.

Leary, R.F., F.W. Allendorf, S.R. Phelps and K.L. Knudsen. 1987. Genetic divergence and identification of seven cutthroat trout subspecies and rainbow trout. Transactions of the American Fisheries Society 116:580-587.

Obbard, M. E., et al. 1987. Furbearer harvests in North America. Pages 1007-1034 in M. Novak et al., eds. Wild furbearer management and conservation in North America. Ontario Ministry of Natural Resources and The Ontario Trappers Association. 1150 pp.

Ryder, R. A., et al. 1987. Distribution and status of the boreal owl in Colorado. Pages 169-174 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). 6 July 1987. Federal Register.

Friend, M. 1987. Field Guide to Wildlife Diseases. Vol. 1: General Field Procedures and Diseases of Migratory Birds. Fish and Wildlife Service Resource Publication 167. 225 pp.

Cheskey, T. 1987. Olive-sided flycatcher. Pages 250-251 in M. D. Cadman, P. F. J. Eagles, and F. M. Helleiner, editors. Atlas of the breeding birds of Ontario. Fed. Ontario Nat., University of Waterloo Press, Waterloo, Ontario.

Eshelman, B.D. and G.N. Cameron. 1987. Baiomys taylori. Am. Soc. Mamm., Mammalian Species No. 285:1-7.

Kersten, M., T. Piersima. 1987. High levels of energy expenditure in shorebirds: metabolic adaptations to an energetically expensive way of life. Ardea 75:175-187.

Raphael, M.G. 1987. Estimating relative abundance of forest birds: simple versus adjusted counts. Wilson Bulletin 99:125-131.

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.

Furness, R. W. 1987. The skuas. T & A D Poyser Ltd., Calton, England. 336 pp.

Briggs, K. T., W. B. Tyler, D. B. Lewis, and D. R. Carlson. 1987. Bird communities at sea off California: 1975 to 1983. Studies in Avian Biology 11:1-74.

Hill, J. E., and D. L. Harrison. 1987. The baculum in the Vespertilioninae (Chiroptera: Vespertilionidae) with a systematic review, a synopsis of Pipistrellus and Eptesicus, and the descriptions of a new genus and subgenus. Bulletin of the British Museum

Martin, J. W. 1987. Behavior and habitat use of breeding northern harriers in southwestern Idaho. Raptor Res. 21:57-66.

Thompson, I. D., and P. W. Colgan. 1987. Numerical responses of martens to a food shortage in northcentral Ontario. J. Wildl. Manage. 51:824-835.

Swift, B. L. 1987. An analysis of avian breeding habitats in Hudson river tidal marshes. New York State Department of Environmental Conservation, Division of Fish and Wildlife, Delmar, New York. Unpublished report. 62 pp.

Dunmire, W. and M. Toll. 1987. Establishment Record for Mesita de los Ladrones Research Natural Area, Santa Fe National Forest. US Forest Service, 60 p.

Dunmire, W. and M. Toll. 1987. Establishment Record for Little Water Canyon Research Natural Area, Cibola National Forest. US Forest Service, 98 p.

Weber, W.A. 1987. Colorado flora: Western slope. Colorado Associated University Press. Boulder. 530 pp.

Sakai, H. F. 1987. Response of Hammond's and western flycatchers to different-aged Douglas-fir stands in northwestern California. Master's thesis, Humboldt State University, Arcata, CA.

Hassler, T.J. 1987. Species profiles: life histories and environmental requirements of coastal fishes and invertebrates (Pacific Southwest)--coho salmon. U.S. Fish and Wildlife Service Biological Report 82(11.70).

Bull, E. L. 1987. Ecology of the pileated woodpecker in northeastern Oregon. Journal of Wildlife Management 51:472-81.

Frech, M.H., and J.L. Confer. 1987. The Golden-winged Warbler: competition with the Blue-winged Warbler and habitat selection in portions of southern, central, and northern New York. Kingbird 37(2):65-72.

Suchy, W. J., and S. H. Anderson. 1987. Habitat suitability index models: northern pintail. U.S. Fish Wildl. Serv. Biol. Rep. 82(10.145). 23 pp.

Laymon, S. A. 1987. Brown-headed Cowbirds in California: historical perspectives and management opportunities in riparian habitats. Western Birds 18:63-70.

Richardson, L., et al. 1987. Winter ecology of black-footed ferrets (Mustela nigripes) at Meeteetse, Wyoming. American Midland Naturalist 117:225-239.

Wakelyn, L. A. 1987. Changing habitat conditions on bighorn sheep ranges in Colorado. Journal of Wildlife Management 51:904-912.

Chapman-Moser, B. 1987. Factors influencing reproductive success and nesting strategies in black terns. Ph.D. thesis, Simon Fraser Univ., British Columbia.

Dulin, G. S. 1987. Pre-fledging feeding behavior and sibling rivalry in common loons. Central Michigan University, Mt. Pleasant, Michigan. M.S. thesis.

Boutin, S. and D. E. Birkenholz. 1987. Muskrat and Round-tailed Muskrat. Pages 314-324 In M. Novak, J. A. Baker, M. E. Obbard and B. Malloch (editors). Wild furbearer management and conservation in North America. Ontario Ministry of Natural Resources, Tor

Frederick, P. 1987. Chronic tidally-induced nest failure in a colony of white ibises. Condor 89:413-419.

Leonard, M. L., and J. Picman. 1987. Nesting success and habitat selection by marsh wrens. Auk 104:491-495.

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 Report for McCrystal Meadow Research Natural Area, Carson National Forest. US Forest Service, 50 p.

Wemmer, C. M., editor. 1987. Biology and management of theCervidae: proceedings of a symposium. Smithsonian Inst. Press, Washington, D. C. 1000 pp.

Schweitzer, D. F. 1987. Catocala pretiosa, the precious underwing moth: results of a global status survey with a recommendation for retention in Category 2. Report from TNC to USFWS, Newton Corner, MA.

Lee, L. A., and J. W. Terrell. 1987. Habitat suitability index models: flathead catfish. U.S. Fish and Wildlife Service Biological Report 82(10.152). 39 pp.

Burton, G. 1987. Recovering the threatened apache trout and endangered Gila trout in Arizona and New Mexico. Western Proceedings, 67th Annual Conf of the Western Assoc Fish and Wildlife Agencies, Salt Lake City, Utah. P 361.