322 NASHVILLE WARBLER 



parts of the song are more nearly balanced. The 

 performance varies greatly toward the end. 



The Black-poll is said to be one of the most 

 beneficial of Warblers, fairly gorging itself on 

 cankerworms. 



Canadian Warbler : Wilsonia canadensis. 

 (See Fig. 184, p. 346.) 



Upper parts gray ; a necklace of black spots on yellow of throat. 



GEOGRAPHIC DISTRIBUTION. Eastern North America ; breeds 

 from Michigan and the hills of southern New York and south- 

 ern New England to Manitoba and Labrador, and winters in 

 Central and South America. Length, about 5-| inches. 



The Canadian is one of the most satisfactory 

 of Warblers, for it may be recognized at sight by 

 its necklace. In the migrations it is found low 

 in bushes, and for a home chooses low wet woods. 



Its spirited song is given by Mr. Ernest Thomp- 

 son as " rup-itrche, rup-it-che, rup-it-chitt-it lit." 



Nashville Warbler : Helminthophila rubricapilla. 



Adults, head gray, with chestnut patch in crown ; back olive-green ; 



under parts bright yellow. Young, duller. Length, about 



4| inches. 

 GEOGRAPHIC DISTRIBUTION. Eastern North America ; breeds 



from northern Illinois and Connecticut northward to Labrador 



and the fur countries ; winters in the tropics. 



One gets so accustomed to looking for a multi- 

 tude of marks on the Warblers, sure that any 

 least dot overlooked will prove the one on which 

 identification hangs, that when one comes upon a 



