° '{gig ] Eifrig, Birds of the Chicago Area. 513 



88. Tringa nebularia (Gunner). Greenshank. — In appearance 

 this bird reminded me much of our Lesser Yellowlegs. It was seen but 

 once, five birds being found on April 28 feeding in an inch or so of water 

 in an open field at the edge of the lake. 



89. Larus fuscus fuscus L. Lesser Black-backed Gull. — On 

 March 10 twenty birds were seen feeding along the ocean beach at low tide. 

 This was my only record for the occurrence of this species. 



90. Larus argentatus L. Herring Gtjll. — This bird was seen but 

 once, some twenty of them being found on December 26 feeding along the 

 ocean beach. 



NOTES OX BIRDS OF THE CHICAGO AREA AND ITS 

 IMMEDIATE VICINITY. 



BY C. W. G. EIFRIG. 



While using the Christmas vacation of 1918-19 to transcribe 

 an accumulated mass of bird notes from my "day book" into my 

 "ledger," i. e., entering them under the names of the species, an 

 intention of several years standing was strengthened into action, 

 namely, to write up some interesting or striking experiences with 

 and observations of birds and to record several rare occurrences. 

 In the latter phase of the work, my friend and companion on many 

 trips, Mr. H. L. Stoddard of the Harris Public School Extension of 

 Field Museum, now in France, has lately rendered yeoman service 

 by recording the seeing or taking of such rare species as the Long- 

 tailed Jaeger, Black Rail, Roseate Tern, Picoidcs arcticus, Hoary 

 Redpoll, Evening Grosbeak, Prairie Warbler and others (Auk, 

 Vols. XXXIII and XXXIV). This present writing, then, is in part 

 at least a continuation of his work, with the addition of such mate- 

 rial as seems to me to be worthy of record. Many of my trips 

 for years past have been to the Sand Dunes of northwestern Indi- 

 ana, extending along the south shore of Lake Michigan from Gary 

 on the west — the city made to order — to Michigan City on the 

 east, a distance of twenty-five miles, by one to two miles wide. 

 This is an immensely interesting region for various classes of nature 



