THE 



WILSON BULLETIN 



NO. 78. 



A QUARTERLY JOURNAL OF ORNITHOLOGY 



VOL. XXIV MARCH, 1912. NO. I 



OLU SERIES VOL. XXIV. NEW SERIES VOL. XIX 



A PRELIMINARY LIST OF THE SUMMER BIRDS OF 

 OF FALL RIVER COUNTY, SOUTHWEST- 

 ERN SOUTH DAKOTA.i 



BY STEPHEN SARGENT VISHER. 



Fall River County is the most southwesterly county in 

 Souht Dakota. The Black Hills extend into the north cen- 

 tral portion. The rest of the county is a plain, much eroded 

 by the Cheyejine River, in the middle of the county, and by 

 its tributaries. From west to east the larger tributaries are: 

 from the north. Fall River and Beaver Creek, and from the 

 south. Hat Creek and Horsehead Creek. Indian Creek, a 

 large tributary of Hat Creek, is on the southern border of the 

 western half of the county. Pierre (Cretaceous) shale forms 

 the subsoil of most of the county. This " gumbo " is unpro- 

 ductive in a dry season and consequently in the exceptionally 

 dry summer of 1911 most of the area was quite barren in as- 

 pect. The valleys of the largest streams are partially filled 

 with groves of cottonwood, ash, elm, etc., and upon the foot- 

 hills there are considerable growths of Bull, Pine. The larger 

 portion of the county is quite free from the signs of civili- 

 zation and fences are absent for miles in a stretch. The towns 

 are Hot Springs, in the north central part; Edgemont, in 

 the west central; Ardmore on Hat Creek near the, Nebraska 

 line : Oelirich in the east central, on Horseshoe Creek. 

 'Published by permission of the State Geologist. 



