Kleen, V. M. 1973. The density and territory size of breeding Prothonotary Warblers (PROTONTARIA CITREA) in southern Illinois. Southern Illinois University, Carbondale, Illinois. M.S. thesis.

Region 3 Research Natural Area Committee. 1973. Establishment Report for Bush Highway Research Natural Area, Tonto National Forest. US Forest Service, 24 p.

Shiller, R. J. 1973. Reproductive ecology of female sharp-tailed grouse and its relation to early plant succession in NW Minnesota. Ph.D. thesis. University of Minnesota. 186 pp.

Buxbaum, K. 1973. Status of the dark-rumped petrel on Maui, 1972. 'Elepaio 34:11-12.

Murie, J. O. 1973. Population characteristics and phenology of a Franklin ground squirrel (Spermophilus franklinii) colony in central Alberta. American Midland Naturalist 90:334-40.

Otto, R. G. 1973. Temperature tolerance of the mosquitofish, Gambusia affinis (Baird and Girard). Journal of Fish Biology 5:575-85.

Wiens, J.A. 1973. Pattern and process in grassland bird communities. Ecological Monographs 43:237-270.

Todsen, T.K. 1973. Sida 5:135.

Vermeer, K. 1973a. Some aspects of the breeding and mortality of common loons in east-central Alberta. Canadian Field-Naturalist 87:403-8.

Drabek, C. M. 1973. Home range and daily activity of the round-tailed ground squirrel, Spermophilus tereticaudus neglectus. American Midland Naturalist 89:287-93.

Noy-Meir, I. 1973. Desert ecosystems: environment and producers. Annual Review of Ecology and Systematics. 4:25-51.

Owens, R. A., and M. T. Myres. 1973. Effects of agriculture upon populations of native passerine birds of an Alberta fescue grassland. Canadian Journal of Zoology 51:697-713.

Wilson, D. E. 1973a. The systematic status of Perognathus merriami Allen. Proc. Biol. Soc. Washington 86:175-192.

Van der Schalie, H. 1973. The mollusks of the Duck River drainage in central Tennessee. Sterkiana 52:45-56.

Whitaker, J. O., and L. L. Schmeltz. 1973. Food and external parasites of SOREX PALUSTRIS and food of SOREX CINEREUS from St. Louis County, Minnesota. Journal of Mammalogy 54(1):283-285.

Arbib, R. 1973. The Blue List of 1974. American Birds 27:943-5.

Edwards, B. F. 1973. A nesting study of a small population of Prairie Falcons in southern Alberta. Canadian Field-Naturalist 87:322-324.

Peden, A. E. 1973. Variation in anal spot expression of gambussin females and its effect on male courtship. Copeia 1973:250-263.

Pence, D. B. 1973. Tetrameres aspinosa: New species from the snowy egret and a new host record for T. robusta (Nematoda: Tetrameridae). Trans. Amer. Microsc. Soc. 92:522-5.

Van Devender, T. R., and C. W. Howard. 1973. Notes on natural nests and hatching success in the regal horned lizard (Phrynosoma solare) in southern Arizona. Herpetologica 29:238-239.

Birney, E.C. 1973. Systematics of three species of wood rats (Genus: Neotoma) in central North America. University of Kansas Museum of Natural History. Miscellaneous publication (58) 1-173.

Woods, C. A. 1973. Erethizon dorsatum. American Society of Mammalogists, Mammalian Species No. 29. 6pp.

Maher, W.J. 1973. Matador Project: Birds I. Population dynamics. Canadian Committee for the International Biological Programme, Matador Project, Technical Report 34. University of Saskatchewan, Saskatoon, Saskatchewan. 56 pp.

Brown, W. S. 1973. Ecology of the racer, Coluber constrictor mormon (Serpentes, Colubridae), in a cold temperate desert in northern Utah. Ph.D. thesis, Univ. Utah, Salt Lake City.

Anderson, A. H., and A. Anderson. 1973. The cactus wren. Univ. Arizona Press, Tucson. xiv + 226 pp.

Emlen, J. T. 1973. Territorial aggression in wintering warblers at Bahama agave blossoms. Wilson Bulletin 85:71-74.

Scudday, J.F. 1973. A new species of lizard of the Cnemidophorus tesselatus group from Texas. Journal of Herpetology. 7(4):363-371.

Pizzimenti, J.J. and R.S. Hoffmann. 1973. Cynomys gunnisoni. Mammalian Species, 25:1-4.

Taylor, W. K. 1973. Black-throated Blue Warbler and Cape May Warblers killed in central Florida. Bird Banding 44:258-266.

Aday, B.J. and A.L. Gennaro. 1973. Mammals (excluding bats) of the New Mexican Llano Estacado and adjacent river valleys. Natural Science Research Institute. Studies in Natural Sciences. 1 (5):1-33 + app.

Brander, R. B. 1973. Life-history notes on the porcupine in a hardwood-hemlock forest in upper Michigan. Michigan Academician 5:425-33.

Wright, M.E. 1973. Analysis of habitats of two woodrats in southern New Mexico. J. Mamm. 54(2):529-535.

Olendorff, R.R. 1973. The ecology of the nesting birds of prey of northeastern Colorado. U.S. International Biological Program, Grassland Biome Technical Report 211. Colorado State University, Fort Collins, CO. 233 pp.

Champie, C. 1973. Strangers in the Franklins. Privately published, El Paso, Texas.

Hester, F. E., and J. Dermid. 1973. The world of the wood duck. J. B. Lippencott Co., Philidelphia. 160 pp.

Hubbard, J. P., and B. J. Hayward. A biological survey of the San Francisco Valley (Greenlee County, Arizona to Catron County, New Mexico), with emphasis on habitats and vertebrates. Unpublished report prepared for USFS. 23 pp.

Hillman, G. N., and W. W. Jackson. 1973. The Sharp-tailed Grouse in South Dakota. South Dakota Department of Game, Fish and Parks Technical Bulletin 3. Pierre.

Guillory, H.D. 1973. Motor vehicles and barbed wire fences as major mortality factors for the least bittern in southwestern Louisiana. Inland Bird Banding News 45:176-177.

Snyder, N. C. N., H. A. Snyder, J. L. Lincer, and R. T. Reynolds. 1973. Organochlorines, heavy metals, and the biology of North American accipters. Bioscience. 23:300-305.

Reddy, S. R., and T. J. Pandian. 1973. Effect of volume of water on predatory efficiency of the fish Gambusia affinis. Current Science 42:644-645.

van Halewijn, R. 1973. Black tern, CHLIDONIAS NIGER, in the south Caribbean Sea. Ardea 61:189-191.

Ambrose, H.W. 1973. An experimental study of some factors affecting the spatial and temporal activity of Microtis pennsylvanicus. J. Mamm. 54:79-110.

Dunford, R. D. and R. B. Owen, Jr. 1973. Summer behavior of immature radio-equipped woodcock in central Maine. Journal of Wildlife Management 37: 462-469.

Ffrench, R. P. 1973. A guide to the birds of Trinidad and Tobago. Livingston, Wynnewood, Pennsylvania.

Correll, D.S., and H.B. Correll. 1972. Aquatic and wetland plants of southwestern United States. 2 volumes. Stanford Univ. Press, Stanford, California. 1777 pp.

Hayward, B.J. and D.L. Hunt. 1972. Vertebrate survey of the Wilderness Ranger District, Gila NF, NM.

Emlen, J. T. 1972. Size and structure of a wintering avian community in southern Texas. Ecology 53:317-329.

Rusch, D. H., et al. 1972. Response of great horned owl populations to changing prey densities. J. Wildl. Manage. 36:282-296.

Richter-Dyn, N. and N.S. Goel. 1972. On the extinction of a colonizing species. Theoretical Population Biology 3:406-433.

Mueller, H. C., M. G. Biben, and H. F. Sears. 1972. Feeding interactions between pied-billed grebes and herons. Auk 89:190.

Edwards, E. P. 1972. A field guide to the birds of Mexico. Ernest P. Edwards, Sweet Briar, VA.

Minton, S. A., Jr. 1972. Amphibians and reptiles of Indiana. Indiana Academy Science Monographs 3. v + 346 pp.

National Audubon Society. 1972. Seventy-second Christmas Bird Count. Audubon Field Notes 26:137-530.

Moore, N. J. 1972. Ethology of the Mexican junco (JUNCO PHAEONOTUS PALLIATUS). Ph.D. diss., Univ. of Arizona, Tucson.

Farentinos, R. C. 1972. Observations on the ecology of the tassel-eared squirrel. Journal of Wildlife Management 36:1234-39.

Sjolander, S., and G. Agren. 1972. Reproductive behavior of the common loon. Wilson Bulletin. 84:296-308.

Schneberger, E. 1972d. Smallmouth bass-life history, ecology, and management. Wisconsin Department of Natural Resources Publication No. 242-72. 16 pp.

Nelson, C.E. 1972c. Gastrophryne olivacea. Catalogue of American Amphibians and Reptiles. 122:1-4.

Hawksworth, F.G., and D. Wiens. 1972. Biology and classification of dwarf mistletoes (Arceuthobium). U.S. Forest Service, Washington, DC. 234 pp.

Coronado National Forest. 1972. Establishment Report for Goudy Canyon Research Natural Area. US Forest Service, 89 p.