114 THE WILSON BULLETIN No. 64. 



listed from one to several each day. The 18th a large number of 

 Olive-backs came in and with them the Gray-cheek, and became 

 very common for that day and the next. In 1907 two doubtful birds 

 were noted September 4. 



203. *Hylociclila ustulata sicainsoni. Olive-backed Thrush. 



Common May 14, 1905, and a few seen May 21, 1906. The late 

 dates of May 30-June 1, 1907, saw them quite common, about equal- 

 ing in numbers the preceding species. In September, 1905, the first 

 arrived the 6th, becoming very common the 8th. It disappeared 

 that night, but gradually increased again to the 13th, when it fairly 

 swarmed all over the place, then slowly decreased in numbers to the 

 end of our stay, the 16th. Our September 1-3 trip of 1906, found it 

 already very common. On our return trip, September 15, it was not 

 observed until the 17th, became common again the next two days, 

 and again dwindled to one on the 21st, w r hen we left. In 1907, in 

 fall, but two birds were noted, September 4, whose exact specific 

 status could not be determined. This and the preceding species are 

 so nearly alike in outward appearance as to be readily mistaken one 

 for the other. With good light and fair opportunity, however, the 

 ochraceous suffusion on the side of the face of this species as con- 

 trasted with the ashy appearance to the same parts of the other 

 consitute a recognition mark that is not readily mistaken. The dif- 

 ference between them seems much more marked in live than in dry 

 museum specimens. These two species suffer greatly during the 

 Sharp-shinned Hawk flights as mentioned before. During the periods 

 of this Hawk's abundance little scattered piles of thrush feathers 

 can be found every here and there through the underbrush. 



204. * II y loci clila guttata, pallasii. Hermit Thrush. 



October 29, 1905, and October 14-15, 1906, are the only times we 

 have been at the Point during the migration period of the Hermit 

 Thrush. On both occasions they have been common. 



205. *Planesticus migratorius. American Robin. 



Common on all May dates. March 9-10, 1907, the first relay had al- 

 ready come and passed on as Gardner reported having seen several 

 the 7th, which were certainly not in evidence to us. They were irreg- 

 ularly common during the early days of fall, but became abundant 

 later when the wild grapes were ripe. During our early 'September 

 dates they have usually been rather scarce for so common a bird, 

 but October 29, 1905, and October 14-15, 1906, they were present in 

 great numbers. Along in the afternoon of the latter date we ob- 

 served a flock of this species start out from the end of the Point, 

 headed across the lake for the Ohio shore. 



