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i r <br />Twentymile Park is unconfirmed. Whether the cranes use this <br />same area in April and how many congregate in this area <br />during spring migration is unknown although local farmers <br />reported seeing 10 to 30 cranes in spring and fall along <br />Fish Creek. <br />LITERATURE CITED <br />Bieniasz, K.A. 1979. The greater sandhill crane in Routt <br />County, Colorado. 1978 Crane 'Workshop. pp 197-203. <br />Blake, D. 1974. A preliminary study of the greater <br />sandhill crane in Colorado. Unpubl. mimeo rept: <br />Colorado Div. Wildl. 19 pp. <br />Colorado Wildlife Commission. 1973. Position statement <br />concerning endangered species. 22 March. <br />Torres, J. 1978. Essential habitat for threatened or <br />endangered wildlife in Colorado. Colo. Div. Wildl. 84 <br />PP• <br />13 <br />