THE 



WILSON BULLETIN 



NO. 89. 



A QUARTERLY JOURNAL OF ORNITHOLOGY 



VOL. XXVI DECEMBER, 1914. NO. 4 



OLD SERIES VOL. XXVI. NEW SERIES VOL. XXI. 



NOTES ON A NORTHERN ROBIN ROOST.^ 



BY ARTHUR R. ABEL. 



The Robin roost to be here described w^as located within 

 the city Hmits of Sioux City, Iowa, in fact in a rather closely 

 built up district of the city. The flight to the roost was first 

 noticed about August 7, 1914, although no record was made 

 at this time. 



However, by the fifteenth the regularity of the flight had 

 been noted and it was decided to determine its origin and des- 

 tination. At this time the birds were flying in considerable 

 numbers, from northeast to southwest, over Newton St. and 

 the College Campus. On this evening the flight was watched 

 on Newton St. from 7 :lo to 7 :28 when the flight practically 

 ceased, and eighty-five birds had been counted. 



On the evening of August 16th, the birds were first noticed 

 at 6 :50, and from this time to 7 :30 110 birds flew over the 

 route. By the thirtieth the numbers were considerably aug- 

 mented, and I had planned to work over toward the north- 

 east in hope of ascertaining how far they came. 



Accordingly I left about six o'clock and went northeast- 

 ward until I reached the ravines north of ^Morningside known 

 as North Ravines. The country here was very hilly and the 



' Read before The Sioux City Bird-Stiuly Club, Nov. .^d. 1014. 



