67 



is rich in springs and sinlvholes filled witli watt-r, the general trend of the 

 underground drainage of this area being southward. There are no large 

 streams or other large bodies of water or swamp in the region under 

 <-ousidoration. Two artificial ponds have been constructed in recent years, 

 a smaller one which supplies the Monon R. R. yards with water and a 

 larger one which is the storage reservoir of the Bloomington waterworks. 



The region is fairly forested, largely by second growth timber, though 

 in some parts of the Knobstone region the primeval forests remain. 



The area is not well suited to aquatic Ijirds but offers many favorable 

 localities to terrestial migrants and residents. 



The total number of species recorded is two hundred and twenty-five, 

 and includes seventy per cent, of the birds recorded from the entire State. 

 Of this number ninety-eight nest here and thirty-nine of the breeding 

 birds are also permanent residents. Twenty-one are winter visitants. 

 Ninety-six are migrants and are seen during a few days in spring and 

 fall. Six are extinct, tAvo are included on rather doubtful evidence, and 

 one is a hypothetic species. The last three groups are included in the 

 supplemental list. One hundred species have been observed on or over 

 the University Campus. 



Each species which has been observed on or over the campus of In- 

 diana University is marked by an asterisk. In cases of species which 

 are either winter or summer residents, the recorded extremes of their 

 stay are given. In tlie case of transients the limits of their arrival and 

 departure are given for both of the migratory seasons. Extinct and 

 hypothetic species are refened to a supplemental list. The numbers in 

 brackets and the nomeclature are those of the A. O. U. check-list. 



I am under obligations to Prof. W. W. Cooke and Mr. A. W. Butler 

 for permission to examine migration schedules. 

 1. [3] CoJymhus mtritiis Linn. Horned Grebe. 



Common migrant. April 11 to 24. This species is classed as a com- 

 mon migrant wholly upon evidence obtained in the spring of 1903. It 

 had not heretofore been recorded from the county, but circumstances lead 

 me to believe that it has merely been overlooked. The first specimen 

 was obtained April 11, by Mr. J. J. Batchelor and Mr. James Simonton. 

 Three others were seen that day. The following numbers were seen at 

 the dates given:— 7, April 12; 4, April 13; 2. April IT; 2. April 18; 2, April 

 lit. and 2, April 24. 



