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1907 DeanE, Ruthven. .The Snowy Owl. Auk, Vol. XXIV (1907). pp. 217-210. 

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1919 Freeman, Daniel. A Bird Calendar of the Fargo Region. Fargo College Bull 



Vol. XV (1919), No. I. Fargo. N. D. 

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1851 Harris, Edward. List of Birds and Mammalia found on the Missouri River 

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1863 HaydEn, F. V. On the Geology and Natural History of the LTpper Missouri. 

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1917 Herrick, Francis Hoeart. Audubon the Naturalist, Vol. II. D. Appleton and 

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1882 Hoffman, W. J. List of Birds observed at Fort Berthold, D. T. Proc. Bos. 

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1878 IngERSOEL, Ernest. Voyaging on the Upper Missouri. Forest and Stream, 

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1899 Job, Herbert K. Some Observations on tlie Anatidae of North Dakota .\uk, 

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1891 Judo, Eemer T. Dakota Game Birds. Forest and Stream, \'ol. XXXVI, No. 



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1892 JuDD, Elmer T. North Dakota Game. Forest and Stream, Vol. XXXIX, No. 



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1893 JuDD, Elmer T. North Dakota Game. Forest and Stream, Vol. XL. No. 18, 



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1917 JUDD, Elmer T. List of North Dakota Birds found in the Big Coulee, Turtle 



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1875 KeEnEy, G. J. Sporting in Dacotah. Forest and Stream, Vol. V, No. 14. p. 220. 



1913 Larson, Adrian. Winter Birds of Northern McKenzie County. North Dakota. 

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1878 McChESNey, Charles E. Notes on the Birds of Fort Sisseton, Dakota Ter- 

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1902 ObERHOLSER, Harry C. A Review of the Larks of the Genus Otocoris. Proc. 



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1021 Over. William H.. and Thoms. Craio S. Birds of South Dakota. Bull. 9, 

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1904 Reed. ChESTEj? A. North American Birds' Eggs. Doubleday, Page, and Com- 

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