Olendorff, Richard R. (Richard Rea), 1943-, authorNatural Resources Ecology Laboratory, Colorado State University, publisher2015-07-282015-07-281973http://hdl.handle.net/10217/15854March, 1973.On cover: Grassland Biome, Ecosystem analysis studies, U.S. International Biological Program.born digitaltechnical reportsengCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.Birds of prey -- ColoradoText