2 University of Michigan 



of southern Michigan. It has never been cut or burned over 

 and many of the trees are splendid specimens, fifty to seventy 

 feet in height to the first limb, and from two to four feet in 

 circumference. The Galien River flows through the forest for 

 about one and one-half miles and there are numerous springs. 

 "The sand dune tract has a frontage on Lake Michigan of 

 about 3.000 feet. It includes probably the highest dunes in 

 the State of Michigan, the largest of which are from two 

 hundred to three hundred feet in height. Much of the tract is 

 wild, and with little doubt the original vegetation prevails in 

 most places. 



"The preserves have been established by Mr. and Mrs. E. 

 K. Warren, of Three Oaks, Michigan, and are incorporated 

 in the 'Edward K. Warren Foundation,' which also includes 

 the Chamberlain Memorial Museum at Three Oaks, founded 

 in 1915 and opened to the public in 1916." 



The study of the avifauna was begun in 191 7, when the 

 writer investigated the conditions in the region about the vil- 

 lage of Harbert and the resort of Birchwood Beach fom July 

 6 to July 26, and, with Mr. H. B. Sherman, from August 26 

 to September 11. The total number of species observed during 

 these periods was 135. Beginning April 7, and continuing 

 for five weeks in 1918, the writer made a study of the spring 

 migration in the Harbert region. In 1919 a camp was estab- 

 lished at the Warren Woods and work was done in that region 

 from May 4 to June i. From April 29 to June 11, 1920, the 

 fauna of that part of the dune region included in the Warren 

 Preser\'e was studied. 



GE;NTiRAi, Habitats 

 No attempt will be made to describe the habitats in detail 

 as the survey of the plant life of the region has not been com- 

 pleted. The general habitats of birds are as follows : 



