Merkle, D. A. 1975. A taxonomic analysis of the Clemmys complex (Reptilia: Testudines) utilizing starch gel electrophoresis. Herpetologica 31:162-166.

Erskine, A. J. 1975a. Aspen-willow forest. American Birds 29:1131-1132.

Cross, J. N. 1975. Ecological distribution of the fishes of the Virgin River (Utah, Arizona, Nevada). University of Nevada, Las Vegas, Nevada. M.S. Thesis. 187 pp.

Balda, R.P., B.C. McKnight, and C.D. Johnson. 1975. Flammulated owl migration in the southwestern United States. Wilson Bulletin 87(4):520-533.

Miller, R.R. and A.A. Echelle. 1975. Cyprinodon tularosa, a new Cyprindontid fish from the Tularosa basin, New Mexico. The Southwest. Nat. 19(4):365-377.

Skinner, R.M. 1975. Grassland use patterns and prairie bird populations in Missouri. Pages 171-180 in M.K. Wali, editor. Prairie: a multiple view. University of North Dakota Press, Grand Forks, ND. 433 pp.

Clepper, H., editor. 1975. Black bass biology and management. Sport Fishing Institute, Washington, D.C. x + 534 pp.

Harrison, H.H. 1975. A field guide to bird's nests in the U.S. east of the Mississippi River. Houghton Mifflin Company, Boston, Massachusetts. 257 p.

O'Farrell, T. P., R. J. Olson, R. O. Gilbert, and J. D. Hedlund. 1975. A population of Great Basin pocket mice, Perognathus parvus, in the shrub-steppe of south-central Washington. Ecological Monographs 45:1-28.

Rittschoff, D. 1975. Some aspects of the natural history and ecology of the leopard frog, Rana pipiens. Ph.D. Thesis, Univ. Mich. 212 pp.

Gustafson, J. R. 1975. A sage sparrow egg in a Black-throated sparrow nest. Auk 92:805-806.

Fjeldsa, J. 1975. Grebes. Villadsen and Christensen, Hvidovre, Denmark. 64 pp.

Beaver, D.L. and P.H. Baldwin. 1975. Ecological overlap and the problem of competition and sympatry in the western and Hammond's flycatchers. Condor 77:1-13.

Svihla, A. 1975. (1) Another locality of the larvae of TANYPTERYX HAGENI Selys in Washington. and (2) Adverse factors affecting the distribution of TANYPTERYX HAGENI Selys. Tombo 18(1-4):43-45.

Conant, R. 1975. A Field Guide to Reptiles and Amphibians of Eastern and Central North America. Second Edition. Houghton Mifflin Company, Boston, Massachusetts. xvii + 429 pp.

Howe, W.H. 1975. The butterflies of North America. Doubleday, New York. 633 pp.

Owen, R. B. and J. W. Morgan. 1975. Summer behavior of radio-equipped woodcock in central Maine. Journal of Wildlife Management 39:179-182.

Schipper, W. J. A., L. S. Buurma, and P. H. Bossenbroek. 1975. Comparative study of hunting behavior of wintering hen harriers Circus cyaneus and marsh harriers Circus aeruginosus. Ardea 63:1-29.

Gutierrez, R. J., C. E. Braun, and T. P. Zapatka. 1975. Reproductive biology of the band-tailed pigeon in Colorado and New Mexico. Auk 92:665-677.

Kelleyhouse, D. G. 1975. Habitat utilization and ecology of the black bear in northern California. M.S. Thesis, Humboldt State University, Arcata. 60pp.

Beecham, J. J., and M. N. Kochert. 1975. Breeding biology of the golden eagle in southwestern Idaho. Wilson Bulletin 87:506-513.

Tanner, W. W., and J. E. Krogh. 1975. Ecology of the zebra-tailed lizard Callisaurus draconoides at the Nevada Test Site. Herpetologica 31:302-316.

Douglass, J. F. 1975. Bibliography of the North American land tortoises (genus GOPHERUS). USFWS Spec. Sci. Rep. - Wildl. 190:1-60.

Cooper, J. A. 1975. Behavioral aspects of the life history of the Illinois mud turtle ( Kinosternon flavescens spooneri). Drake University, Des Moines, IA. M.S. Thesis.

Balfour, E., and C. J. Cadbury. 1975. A population study of the hen harrier, Circus cyaneus in Orkney. Pages 122-8 in R. Goodier (editor). The Natural Environment of Orkney. The Nature Conservancy Council, Edinburgh, Scotland.

Peden, A. E. 1975. Differences in copulatory behavior as partial isolating mechanisms in the poeciliid fish Gambusia. Canadian Journal of Zoology 53:1290-6.

Schroeder, M.H., and D.L. Sturges. 1975. The effect on the Brewer's sparrow of spraying big sagebrush. Journal of Range Management 28:294-297.

Hodkinson, I. D. 1975. Energy flow and organic matter decomposition in an abandoned beaver pond system. Oecologia 21:131-139.

Pearson, A. M. 1975. The northern interior grizzly bear Ursus arctos L. Canadian Wildlife Service Report Series, no. 34, 86 pp.

Blem, L.B., and C.R. Blem. 1975. The effect of flooding onlength of residency in the white-footed mouse, Peromyscus leucopus. Am. Midl. Nat. 94(1):232-236.

Trapp, G. R., and D. L. Hallberg. 1975. Ecology of the gray fox (Urocyon cinereoargenteus): a review. Pages 164-178 in M. W. Fox (editor). The wild canids. Van Nostrand, Reinhold Co., New York. 508pp.

Findley, J. S., A. H. Harris, D. E. Wilson, and C. Jones. 1975. Mammals of New Mexico. University of New Mexico Press, Albuquerque. 360 pp.

Raim, A.J. 1975. Territory and mating system in the Bobolink, DOLICHONYX ORYZIVORUS. M.A. thesis. Western Michigan University. 90 pp.

Banks, E. M., R. J. Brooks, and J. Schnell. 1975. A radiotracking study of home range and activity of the brown lemming (Lemmus trimucronatus). Journal of Mammalogy 56:888-901.

Pianka, E. R., and W. S. Parker. 1975. Ecology of horned lizards: a review with special reference to Phrynosoma platyrhinos. Copeia 1975(1):141-162.

van Zyll de Jong, C.G. 1975. The distribution and abundance of the wolverine (Gulo gulo) in Canada. Canadian Field-Nat.,89(4):431-437.

Major, P. D. 1975. Density of snapping turtles, Chelydra serpentina in western West Virginia. Herpetologica 31:332-335.

Chapman, J. A. 1975. Sylvilagus nuttallii. Mammalian Species, 56:1-3.

Wallestad, R. 1975. Male sage grouse responses to sagebrush treatment. Journal of Wildlife Management 39:482-484.

Thomas, J. R., Jr. 1975. Distribution, population densities, and home range requirements of the Stephens' kangaroo rat (Dipodomys stephensi). M.S. Thesis, California State Polytechnic University, Ponoma. 64pp.

Findley, J. S., A. H. Harris, D. E. Wilson, and C. Jones. 1975. Mammals of New Mexico. Univ. of New Mexico Press, Albuquerque. 360 pp.

Gould, F.W. 1975. The grasses of Texas. Texas A & M Univ. Press, College Station, TX. 653 pp.

Woffinden, N.D. 1975. Ecology of the Ferruginous Hawk (BUTEO REGALIS) in central Utah: population dynamics and nest site selection. M.S. thesis. Brigham Young University, Provo, UT. 102 pp.

Conner, R. N., R. G. Hooper, H. S. Crawford, and H. S. Mosby. 1975. Woodpecker nesting habitat in cut and uncut woodlands in Virginia. Journal of Wildlife Management 39:144-150.

Pizzimenti, J., and G. D. Collier. 1975. Cynomys parvidens. Mammalian Species 52:1-3.

Wiley, J. W. 1975. The nesting and reproductive success of red-tailed hawks and red-shouldered hawks in Orange County, California, 1973. Condor 77:133-139.

March, G. L., and M. F. S. Sadlier. 1975. Studies on the band-tailed pigeon (COLUMBA FASCIATA) in British Columbia. II. Food resources and mineral-graveling activity. Syesis 5:279-284.

Christenson, L.M. 1975. The shovelnose sturgeon, Scaphirhynchus platorynchus (Rafinesque), in the Red Cedar-Chippewa river system, Wisconsin. Wisconsin Department of Natural Resources Research Report 82. 23 pp.

Wiens, J.A., and M.I. Dyer. 1975. Rangeland avifaunas: their composition, energetics, and role in the ecosystem. Pages 146-182 in D.R. Smith, editor. Symposium on the management of forest and range habitats for nongame birds. USDA Forest Service, General

Fitch, H. S. 1975. A demographic study of the ringneck snake (Diadophis punctatus) in Kansas. Univ. Kansas Mus. Nat. Hist. Misc. Pub. 62:1-53.

Black, H. L. 1974. A north temperate bat community: structure and prey populations. J. Mamm. 55:138-157.

Auffenberg, W. 1974. Checklist of fossil land tortoises (Testudinidae). Bulletin of the Florida State Museum, Biological Sciences. 18(3):121-251.

Gaines, D. 1974. Review of the status of the Yellow-billed Cuckoo in California: Sacramento Valley populations. Condor 76:204-209.

Wiens, J.A. 1974. Climatic instability and the "ecological saturation" of bird communities in North American grasslands. Condor 76:385-400.

Austin, G.T., and E.L. Smith. 1974. Use of burrows by brown towhees and black-throated sparrows. Auk 91:167.

Sutton, D.A. and C.F. Nadler. 1974. Systematic revision of three Townsend chipmunks (Eutamias townsendii). The South- western Naturalist 19(2):199-212.

Holcomb, L. C. 1974. The influence of nest building and egg laying behavior on clutch size in renests of the willow flycatcher. Bird-Banding (45) 4: 320-325.

Maher, W.J. 1974. Matador Project: Birds II. Avifauna of the Matador area. Canadian Committee for the International Biological Pragramme, Matador Project, Technical Report 58. University of Saskatchewan, Saskatoon, Saskatchewan. 31 pp.

Ferlatte, W.J. 1974. A flora of the Trinity Alps of northern California. University California Press, Berkeley. 206 pp.

Elliott, R. (1974) Performance Report as Required by Federal Aid in Fish Restoration Act. Statewide Fisheries Investigations Federal Aid Project F-22-R-15 Brown Trout:Rio Grande Cutthroat Relationship. Job No. I-2. Retrieved from the Regional Office, USFS