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.

Janis, C. M., and K. M. Scott. 1987. The interrelationships of high ruminant families with special emphasis on the members of the Cervoidea. Am. Mus. Novitates 2893:1-85.

Isler, M. L., and P. R. Isler. 1987. The tanagers. Natural history, distribution, and identification. Smithsonian Inst. Press, Washington, D.C. 404 pp.

Clough, G. C. 1987. Ecology of island muskrats, Ondatra zibethicus, adapted to upland habitat. Can. Field-Nat. 101:63-69.

Johnson, S. R., and D. M. Troy. 1987. Nesting of the Ross'goose and blue-phase snow goose in the Sagavanirktok river delta, Alaska. Condor 89:665-667.

Mills, A. 1987. Golden-winged warbler. Page 358 in M. D. Cadman, P. F. J. Eagles, and F. M. Helleiner (editors). Atlas of the breeding birds of Ontario. Federation of Ontario Naturalists, University of Waterloo Press, Waterloo, Ontario.

U.S. Fish and Wildlife Service (USFWS). 3 August 1987. Determination of threatened status and critical habitat for the Inyo brown towhee. Federal Register 52:28780-28786.

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.

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.

Johnson, T.H. (1987) The Peregrine Falcon in Northern New Mexico- 1987. Retrieved from the Regional Office. 13 p.

Gennaro, A.L. 1987. Breeding of an urban population of Mississippi kites in Clovis, NM. Report to Nongame Program, NM Dept. of Game and Fish.

U.S. Fish and Wildlife Service (USFWS). 1987. Migratory Nongame Birds of Management Concern in the United States: The 1987 List. Office of Migratory Bird Management, U.S. Fish and Wildlife Service, Washington, D.C. 63 pp.

Brett, J. 1987. Northeast region report. Eyas 10:18-22.

Guillory, H. D. 1987. Cavity competition and suspected predation on Prothonotary Warberls by Peromyscus spp. Journal of Field Ornithology 58:425-7.

Litvaitus, J. A., J. T. Major, and J. A. Sherburne. 1987. Influence of season and human-induced mortality on spatial organization of bobcats (FELIS RUFUS) in Maine. J. Mamm. 68:100-106.

Olson-Edge, S.L., and W.D. Edge. 1987. Density and distribution of the Mountain Plover on the Charles M. Russell National Wildlife Refuge. Prairie Naturalist 19:233-238.

Seutin, G. 1987. Female song in Willow flycatchers (EMPIDONAX TRAILLII). Auk 104:329-330.

U.S. Fish and Wildlife Service (USFWS). 3 June 1987. Determination of endangered status for the Mount Graham red squirrel. Federal Register 52:20994-20999.

Abts, M. L. 1987. Environment and variation in life history traits of the chuckwalla, Sauromalus obesus. Ecological Monographs 57:215-232.

Clark, T. W., et al. 1987. Martes americana. Am. Soc. Mamm., Mammalian Species 289:1-8.

Fuller, M. R., and J. A. Mosher. 1987. Raptor survey techniques. Pages 37-65 in B. A. Giron Pendleton, et al., eds. Raptor management techniques manual. National Wildlife Federation, Washington, D.C.

Littlefield, C. D., and S. P. Thompson. 1987. Winter habitat preferences of northern harriers on Malheur National Wildlife Refuge, Oregon. Oregon Birds 13:156-64.

Reynolds, R.T., and B.D. Linkhart. 1987b. The nesting biology of flammulated owls in Colorado. Pages 239-248 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.

Wilson, M. H. and J. A. Crawford. 1987. Habitat selection by bobwhites and chestnut-bellied scaled quail in south Texas. Journal of Wildlife Management 51:575-582.

Kluge, A. G. 1987. Cladistic relationships in the Gekkonoidea (Squamata, Sauria). Univ. Michigan Museum Zoology Miscellaneous Publication No. 173.

Johnson, T. R. 1987. The amphibians and reptiles of Missouri. Missouri Department of Conservation, Jefferson City. 368 pp.

Coleman, J. S., and J. D. Fraser. 1987. Food habits of black and turkey vultures in Pennsylvania and Maryland. J. Wildl. Manage. 51:733-739.

Johnson, D.W. and D.M. Armstrong. 1987. Mammalian species. Peromyscus crinitus. Am. Soc. Mamm., Mammalian Species 287: 1-8.

Minckley, W. L., and G. K. Meffe. 1987. Differential selection by flooding in stream-fish communities of the arid American southwest. Pp. 93-104 in W.J. Matthews and D.C. Heins (eds.). Community and evolutionary ecology of North American stream fishes. Un

Reid, D. G., et al. 1987. A possible method for estimating river otter, Lutra canadensis, populations using snow tracks. Canadian Field-Nat. 101:576-580.

Anderson, E. M. 1987. A critical review and annotated bibliography of literature on the bobcat. Colorado Div. Wildl. Spec. Rep. 62. 68 pp.

Green, N. B., and T. K. Pauley. 1987. Amphibians and reptiles in West Virginia. University of Pittsburgh Press, Pittsburgh, Pennsylvania. xi + 241 pp.

Altenbach, M. 1987. Field notebook.

United States Forest Service. 1987. Astragalus altus monitoring plot with specimen locations. United States Forest Service (USFS) Regional Office, Albuquerque, NM. p.3.

Addison, E. M., I. K. Barker, and D. B. Hunter. 1987. Diseases and parasites of furbearers. Pages 893-909 in M. Novak et al., editors. Wild furbearer management and conservation in North America. Ontario Ministry of Natural Resources.

Collopy, M. W., and K. L. Bildstein. 1987. Foraging behavior of northern harriers wintering in southeastern salt and freshwater marshes. Auk 104:11-16.

Hannon, S. J., et al. 1987. Poor acorn crop, dominance, and decline in numbers of acorn woodpeckers. J. Anim. Ecol. 56:197-207.

Messick, J. P. 1987. North American badger. Page 586-597 in Novak, M., J. A. Baker, M. E. Obbard, and B. Malloch (editors). Wild furbearer management and conservation in North America. Ontario Ministry of Natural Resources. Toronto, Ontario. 1150 pp.

Schmutz, J.K. 1987. The effect of agriculture on Ferruginous and Swainson's hawks. Journal of Range Management 40:438-440.

Kimsey, Bryan. 1987. The 1987 Socorro Resource Area Raptor Survey. BLM Socorro Resource Area.

Howe, M., and T. Phillips. 1987. Sensitive threatened and endangered species plant data form. Unpublished plant form on Coryphantha duncanii for BLM Las Cruces district. White Sand Resource Area dated 17 July 1987. 1p.

Hubbard, J. P. 1987. The vegetative communities and vertebrate fauna of the Gray Ranch, Hidalgo County, New Mexico. Endangered species program, New Mexico Department of Game and Fish, Santa Fe, NM.

Brooks, R. P., and W. J. Davis. 1987. Habitat selection by breeding belted kingfishers (Ceryle alcyon). Am. Midl. Nat.117:63-70.

Goad, M. S., and R. W. Mannan. 1987. Nest site selection by elf owls in Saguaro National Monument, Arizona. Condor 89:659-662.

Maret, J. J., M. Parker, and T. E. Fanny. 1987. The effect of beaver ponds on the non-point source water quality of a stream in southwestern Wyoming. Water Resources 21(3):263-268.

O'Neal, G. T., J. T. Flinders, and R. P. Clary. 1987. Behavioral ecology of the Nevada kit fox (Vulpes macrotis nevadensis) on a managed desert rangeland. Pages 443-481 in H. H. Genoways, editor, Current Mammalogy 1:1-519. Plenum Press, New York.

Smallwood, J. A. 1987. Sexual segregation by habitat in American kestrels wintering in southcentral Florida: vegeta-tive structure and responses to differential prey availability. Condor 89:842-849.