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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 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 />2018 Knox Project Avian Nest Survey