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LITERATURE CITED <br /> Bailey, Alfred M. and R.J. Niedrach. 1965. Birds of Colorado, Volume II, Denver <br /> Museum of Natural History <br /> Colorado Oil and Gas Conservation Commission. 2019, web site map of special wildlife <br /> species and restricted habitat (http://dnrwebmapgdev.state.co.us-/mg20l2app/) <br /> Colorado Division of Wildlife. 1990 update. Colorado Mammal Distribution Latilong <br /> Study. Colorado Division of Wildlife and the Denver Museum of Natural History. <br /> Colorado Division of Wildlife. 1987. Colorado Bird Distribution Latilong Study. <br /> Colorado Division of Wildlife in association with the Colorado Field Ornithologists. <br /> Colorado Division of Wildlife. 1981. 2nd ed. Colorado Reptile and Amphibian <br /> Distribution Latilong Study. Colorado Division of Wildlife. <br /> Sibley, David Allen. 2001. The Sibley Guide to Bird Life and Bird Behavior. Alfred E. <br /> Knopf <br /> Loveland Ready Mix Concrete Page 6 <br /> 2019 Knox Project Avian Nest Survey <br />