1896.] NATURAL SCIENCES OF PHILADELPHIA. 165 



.Family SYLVIIDJE. 



Begulus satrapa Licht. Golden-crowned Kinglet. 



Plumages, first, wiuter, nuptial. 

 No spring molt. 



Begulus calendula (Linn.). Ruby-crowned Kinglet. 



Plumages and molt as in the last. Mr. C. W. Beckham-* states 

 that the young male generally acquires the red crown patch when 

 the first plumage is molted but not always, and that the female never 

 acquires it. Several variations in the color of the red patch have 

 also been described. 



Polioptila cserulea (Linn.). Blue-gray Qnatcatcher. 



Plumages, first, Avinter, nuptial. 



While none of the February or April specimens show signs of 

 molt, I think that some individuals have a partial molt in spring 

 and I have examined a specimen of P. albiveiitris Lawr., showing 

 the spring molt in progress (March 19th.). 



Family TURDIDiE. 



Turdus mustelinus Gmel. Wood Thrush. 



Plumages, first, winter, nuptial. 



Although I have no winter or early spring specimens of the Wood 

 Thrush, I consider that there is only a slight spring molt if any. 



Turdus aliciae Baird. Gray-cheeked Thrush. 



Turdus ustulatus swainsonii (Cab.). Olive-backed Thrush. 



The above remarks apply equally to these species. 

 Turdus aonalaschkae pallasii (Cab.). Hermit Thrush. 



I have examined a large series of Hermit Thrushes, including 

 winter specimens, and can find no traces of a spring molt. The 

 abrasion is more marked than in the last two species. 



Turdus fusoescens Steph. Wilson's Thrush. 



Plumages and molt as in the preceding. 



Merula migratoria (Linn.). Robin. 

 Sialia sialis (Linn.). Bluebird. 



Plumages, first, winter and nuptial. 



No spring molt occurs, but some abrasion is seen in spring birds. 



2*Proc. U. S. Nat. Mus., 1885, p. 625. 



