70 



Tinker, Ornithology of Clay and Palo Alto Counties, la. 



fAuk 

 [Jan. 



NOTES ON THE ORNITHOLOGY OF CLAY AND PALO 

 ALTO COUNTIES, IOWA. 



BY A. D. TINKER.^ 



Plates XI~Xn. 



The following paper is based upon material secured by the 

 University of Michigan-Walker Expedition to northwestern Iowa 

 in the summer of 1907. The field notes are those of Alexander G. 

 Ruthven, who has also supplied the general summary of the habitat 



JEROKEJE j I poJjAKOI^S 



'Cherok^ , i bUENA VISTA j Pocajiontas* X 

 ag S 1 r m L;a k e/ 1 



Fig. 1. Map showing area covered by survey. 



distribution and has assisted in the preparation of the paper. The 

 field work was done by Drs. Ruthven and Max M. Peet, and cov- 

 ered the period between July 1 and September L Three papers ^ 

 have appeared on the results of this work. 



' Museum of Zoology, University of Michigan. 



2 Ruthven, Alexander G., The Faunal Affinities of the Prairie Region of Central 

 North America. Amer. Nat., XLII, pp. 388-393. Contributions to the Her- 

 petology of Iowa. Proc. Iowa Acad. Sci., 1910, pp. 198-209. Ruthven, Alexander 

 G., and Wood, Norman A., Notes on a Collection of Mammals from North- 

 western Iowa, ibid., 1912, pp. 203-205. 



