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Arledge, J.G. and R. Boice. 1968. Economics of water intake in packrats (Neotoma albigula and Neotoma micropus). Abstract: Barren and wet habitats. Amer Zool 8(4): 751.

Ligon, J.D. 1968. The biology of the elf owl, MICRATHENE WHITNEYI. Univ. Michigan Mus. Zool., Misc. Publ. No. 136.

Mead, R. A. 1968. Reproduction in western forms of the spotted skunk (genus Spilogale). Journal of Mammalogy 49: 373-390.

Leege, T. A. 1968. Natural movements of beavers in southeastern Idaho. Journal of Wildlife Management 32:973-976.

Gibbons, J. W. 1968c. Reproductive potential, activity and cycles in the painted turtle, Chrysemys picta. Ecology 49:399-409.

Baumgartner, A.M. 1968. Harris' Sparrow. Pages 1249-1273 in Life Histories of North American Cardinals, Grosbeaks, Buntings, Towhees, Finches, Sparrows, and Allies. A.C. Bent, editor. U.S. National Museum Bulletin 237, Part 3. Washington, DC.

Munz, P.A. 1968. Supplement to a California flora. Univ. California Press. Berkeley. 224 pp.

Packard, R. L. 1968. An ecological study of the fulvous harvest mouse in eastern Texas. American Midland Naturalist 79:68-88.

Mayhew, W. W. 1968. Biology of desert amphibians and reptiles. Pp. 195-356 in Brown, G. W. Jr. (ed.). Desert biology. Vol. 1. 1968. Academic Press, New York, NY.

Horn, H. S. 1968. The adaptive significance of colonial nesting in the Brewer's Blackbird. Ecology 49:682-694.

Fairfield, G.M. 1968. Chestnut-collared Longspur. Pages 1635-1652 in O.L. Austin, Jr., editor. Life histories of North American cardinals, grosbeaks, buntings, towhees, finches, sparrows, and allies. Dover Publications, Inc., New York, NY.

Orians, G.H., Christman. 1968. Behavior of redwinged, tri-colored, and yellow headed blackbirds. Berkeley. 301 pp.

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Lein, M.R. 1968. The breeding biology of the Savannah Sparrow, PASSERCULUS SANDWICHENSIS (Gmelin), at Saskatoon, Saskatchewan. M.S. thesis. University of Saskatchewan, Saskatoon, Saskatchewan. 171 pp.

Root, O. M. 1968. Spizella pallida (Swainson). Pages 1186-1208 in A. C. Bent, editor. Life histories of North American cardinals, grosbeaks, buntings, towhees, finches, sparrows, and allies. U.S. National Museum Bulletin 237.

Minckely, W.L. and J.E. Deacon. 1968. Southwestern fishes and the enigma of 'endangered species'. Science 159:1424-32.

Humphrey, P. S., D. Bridge, and T. E. Lowjoy. 1968. A technique for mist-netting in the forest canopy. Bird-Banding 39:43-50.

Ficken, M. S., and R. W. Ficken. 1968. Courtship behavior of Blue-winged Warblers and their hybrids. Wilson Bulletin 80:161-172.

Coulter, M. W., and W. R. Miller. 1968. Nesting biology of Black Ducks and Mallards in northern New England. Vermont Fish and Game Department Bulletin 68-2.

Zweifel, R.G. 1968a. Rana boylii. Catalogue of American Amphibians and Reptiles 71:1-2.

Little, R. McKirdy, H. 1968. Statewide Fisheries Investigations, Rancho Del Rio Grande Grant, Carson National Forest, Project numbers F-22-R-7 & 8. Job Number A-1. Job Completion Report, Research Project Segment, as Required by Federal Aid in Fish Restora

Anderson, J.D. 1968. A comparison of the food habits of Ambystoma macrodactylum sigillatum, Ambystoma macrodactylum croceum, and Ambystoma tigrinum califoriense. Herpetologica 24(4):273-284.

Mueller, H. C. and D. D. Berger. 1968. Sex ratios and measurements of migrant goshawks. Auk 85:431-436.

Larson, J. S., and F. C. Van Nostrand. 1968. An evaluation of beaver aging techniques. Journal of Wildlife Management 32:99-103.

Gibbons, J.W. 1968a. Population structure and survivorship in the painted turtle, Chrysemys picta. Copeia 1968(2): 260-268.

Baepler, D.H. 1968. Lark Sparrow. Pages 886-902 in A.C. Bent, editor. Life histories of North American cardinals, grosbeaks, buntings, towhees, finches, sparrows, and allies. Dover Publications Inc., New York, NY.

Netboy, A. 1968. The Atlantic salmon, a vanishing species. Faber and Faber, London. 457 pp.

Ligon, J. D. 1968. Observations on Strickland's Woodpecker, DENDROCOPOS STRICKLANDI. Condor 70:83-84.

Lane, J. 1968. Baird's sparrow (AMMODRAMUS BAIRDII). In A. C. Bent. Life histories of North American cardinals, grosbeaks, huntings, towhees, finches, sparrows and allies, part two. U.S. National Museum Bulletin. 237:603-1248.

Buckner, C. H., and D. G. H. Ray. 1968. Notes on the water shrew in bog habitats of southeastern Manitoba. Blue Jay 26(2):95-6.

Raitt, R. J. and R. L. Maze. 1968. Densities and species composition of breeding birds of a creosote bush community in southern New Mexico. Condor 70:193-205.

Linzey, D. W., and A. V. Linzey. 1968. Mammals of the Great Smoky Mountains National Park. J. Elisha Mitchell Sci. Soc. 84(3):384-414.

McGahan, J. 1968. Ecology of the golden eagle. Auk 85:1-12.

Cronan, John M. and Albert Brooks. 1968. THE MAMMALS OF RHODE ISLAND. RHODE ISLAND DEPT. OF NATURAL RESOURCES. 133 PP.

Bent, A.C., et al. 1968. Life histories of North American cardinals, grosbeaks, buntings, towhees, finches, sparrows, and allies. Part Two. U.S. National Museum Bulletin 237. (reprinted by Dover Publications, Inc., New York, NY).

Cole, C. J. 1968. Sceloporus virgatus. Cat. Am. Amph. Rep. 72.1-72.2.

Weston, J.B. 1968. Nesting ecology of the Ferruginous Hawk, BUTEO REGALIS. Brigham Young University Science Bulletin 10:25-36.

Rumsey, R. L. 1968. Capture and care of pileated and red-headed woodpeckers. Bird-Banding 39:313-6.

Minckley, W. L., and J. E. Deacon. 1968. Southwestern fishes and the enigma of "endangered species." Science 159:1424-32.

King, J. A. (ed.). 1968. Biology of Peromyscus (Rodentia). Am. Soc. Mamm. Spec. Publ. No. 2. 593 pp.

Cottam, C., and J. Trefethen, eds. 1968. Whitewings. Princeton. 348 pp.

Ficken, R. W., M. S. Ficken, and D. H. Morse. 1968. Competition and character displacement in two sympatric pine-dwelling warblers (DENDROICA, Parulidae). Evolution 22:307-14.

Taber, W. 1968. PASSERCULUS SANDWICHENSIS NEVADENSIS: Nevada Savannah Sparrow. Pages 708-711 in A.C. Bent, editor. Life histories of North American cardinals, grosbeaks, buntings, towhees, finches, sparrows, and allies, Part 2. Dover Publications, Inc., N

Ray, T. 1968. Naphthalene crystals as protection for nesting raptors. Hawk Chalk 7:52-4.

Monroe, B.L., Jr. 1968. A distributional survey of the birds of Honduras. Ornithological Monographs 7:1-458.

Grant, K.A., and V. Grant. 1968. Hummingbirds and their flowers. Columbia University Press, New York.

Walkinshaw, L.H. 1968. Eastern Field Sparrow. Pages 1217-1235 in O.L. Austin, editor. Life histories of North American cardinals, grosbeaks, buntings, towhees, finches, sparrows, and allies. Dover Publications, Inc., New York, NY.

Smith, C. C. 1968. The adaptive nature of social organization in the genus of tree squirrels, Tamiasciurus. Ecological Monographs 38:31-63.

Whitworth, W. R., P. R. Berrien, and W. T. Keller. 1968. Freshwater fishes of Connecticut. State Geological and Natural History Survey Bulletin No.101. 134 pp.

Brown, L. and D. Amadon. 1968. Eagles, hawks, and falcons of the world, Vol. 2. Country Life Books. London. 945 pp.

Walkinshaw, L.H. 1968. Le Conte's Sparrow (PASSERHERBULUS CAUDACUTUS). Pages 765-776 in O.L. Austin, Jr., editor. Life histories of North American cardinals, grosbeaks, buntings, towhees, finches, sparrows, and allies. Part 2. United States National Museu

Smith, R.L. 1968. Grasshopper Sparrow. Pages 725-745 in O.L. Austin, Jr., editor. Life histories of North American cardinals, grosbeaks, buntings, towhees, finches, sparrows, and allies, Part 2. Dover Publications, Inc., New York, NY.

Thaeler, C.S. Jr. 1968. An analysis of the distribution of pocket gopher species in northeastern California (Genus Thomomys). University of California Publications in Zoology Vol. 86, University of California Press, Berkeley.

Brown, L. and D. Amadon. 1968. Eagles, Hawks, and Falcons of the World. McGraw-Hill, NY.

Bacon, E. J., Jr., W. H. Neill, Jr., and R. B. Kilambi. 1968. Temperature selection and heat resistance of the mosquitofish, Gambusia affinis. Proceedings of the Annual Conference of the Southeastern Association of Game and Fish Commissioners 22:411-416

Barr, T. C., Jr., and J. R. Reddell. 1967. The arthropod cave fauna of the Carlsbad Caverns region, New Mexico. Southwestern Naturalist 12:253-274.

Storer, R. W. 1967. The patterns of downy grebes. Condor 69:469-78.

Miller, R. R., and C. H. Lowe. 1967. Part 2: The fishes of Arizona. Pages 133-151 in Lowe, C. H. (editor). The Vertebrates of Arizona. University of Arizona Press, Tuscon, Arizona.

Cross, F. B. 1967. Handbook of fishes of Kansas. University of Kansas Museum of Natural History Miscellaneous Publication No. 45. 357 pp.