386 MEMOIRS OF THE NUTTALL ORNITHOLOGICAL CLUB. 



243. Hylocichla aliciae (Baird). 

 Gray-cheeked Thrush. Alice's Thrush. 



Uncommon transient visitor in spring and autumn. 



SEASONAL OCCURRENCE. 



May 13, 1895, one large male seen and heard, Cambridge, W. Brewster. 



May 18 — 28. 

 June 2, 1S98, one large bird seen (Concord), W. Brewster. 



September 10, 1892, one male^ taken, Cambridge. 

 September 15 — October 9. 



244. Hylocichla aliciae bicknelli Ridgw. 

 Bicknell's Thrush. 



Rather common transient visitor in spring and autumn. 



SEASONAL OCCURRENCE. 



May 2, 1894, one seen, Arlington, W. Fa.xon. 

 May 30, 1882, one female 2 taken, Belmont. 



September 25 — October 5. 



It is difficult to distinguish the Gray-cheeked from the Bicknell's Thrush 

 without using a gun, for these birds differ only in size, their coloring, their 

 haunts, their habits, and their songs and call-notes, being essentially the same. 

 In the Cambridge Region the larger and more northern-breeding form, alicice, 

 occurs decidedly the less often of the two, and its vernal migration apparently 

 takes place somewhat later than that of bicknelli although between the 15th 

 and 25th of May, as well as in early October, the two birds may be sometimes 

 found together. Like most of the spotted-breasted Thrushes belonging to the 

 genus Hylocichla they dislike strong sunlight, which, no doubt, is trying to their 

 fine, large, dreamy-looking eyes. In spring they frequent, for the most part, 

 upland woods and thickets where there are crowded growths of young pines or 



*No. 45,174, collection of William Brewster. 

 2 No. 7606, collection of William Brewster. 



