44 THE AUDUBON BULLETIN 



far as available data can make it, and the Illinois Audubon Society may 

 well be proud to send it out as the work of one of its members. 



In this final revision Mr. Gault corresponded with Mr. Ridgway and 

 Mr. Vandercook and profited by their cordial co-operation. Certain addi- 

 tions to and revision of the data furnished by them for the Spring Bulletin 

 have been made with their approval. For the benefit of new readers of 

 the Bulletin certain items of interest that accompanied the presentation 

 of the check list in the Spring Bulletin are here repeated. 



The material for the revision and additional records embodied in this 

 check list has been furnished by Mr. Robert Ridgway of the United States 

 National Museum, whose summer home is at Olney, Richland County, 

 Mr. Benjamin T. Gault of Glen Ellyn, Mr. Isaac Hess of Philo, and Mr. 

 C. E. Vandercook of Odin. The records of observations of Mr. Gault 

 have long been regarded as standard for Illinois by government experts 

 such as the late Wells W. Cooke, and by Frank Chapman and other writ- 

 ers. Mr. Ridgway is one of the most eminent ornithologists America has 

 produced. Mr. Hess is a business man of Philo who has for many years 

 been a discriminating field student of birds. His list of 108 species of 

 birds whose nests he visited within a ten-mile radius of his home in Cham- 

 paign County should greatly stimulate the interest of bird observers in 

 Central Illinois. Mr. Vandercook's list of 95 species from Clinton County 

 in Southern Illinois is entitled to the same honorable mention. 



The check list recently revised by Mr. Gault was prepared as follows : 

 Mr. Gault's list was printed with initial letters referring to Northern, Cen- 

 tral and Southern Illinois. Mr. Ridgway' s list for Southern Illinois and 

 Mr. Hess' list for Central Illinois were embodied in this by the use of 

 asterisks and daggers. Asterisks refer to nesting records in Southern Illi- 

 nois, double asterisks showing that the record was made in Richland Coun- 

 ty in which Mr. Ridgway's farm home is located and where his special 

 observations have been made. Mr. Hess' records of nesting birds for Cen- 

 tral Illinois were distinguished with dagger marks. These special desig- 

 nations have been preserved in the final revised list as printed herewith. 



Explanation 



The initial letters, N.C.S., refer respectively to Northern, Central and 

 Southern Illinois. Where no such initial letter appears there is no record 

 of the species breeding in Illinois, and such species are pure migrants or 

 occasional visitants. The asterisks mark birds as nesting in Southern Illi- 

 nois, the double asterisks referring especially to Richland County. The 

 dagger mark refers to Central Illinois, the special reference being to 

 Champaign County. The order in which the names appear is that of the 

 AOU check list employed by all ornithologists. In using this check list 

 many of our readers may find it more convenient to begin at the end of the 

 list, where the more common birds, such as the blue bird and robin, appear. 

 The abbreviation S.R. refers to summer residents. 



Grebes Loons 



Holboell's Grebe. Loon - N - No recent nesting records, 



tt a r> u at r> u ui f so far as known. 



Horned Grebe. N. Probably very Black-throated Loon. 



rare if not questionable, as a Re d-throated Loon. 



breeder at present day. Jaegers 



Eared Grebe Pomarine Jaeger. 



Pied-billed Grebe. N. C. S. Long-tailed Jaeger. 



