Vol. XI n 



iSgs J 



Brewster on the Pine Grosbeak. 



255 



Massachusetts, and as several of the extraHmital records — 

 notably for New York — relate to dates in November or early 

 December, it seems better to treat them as representing inde- 

 pendent movements, such as were noted during the same winter 

 in northern Maine and New Hampshire. 



Map No. 2 shows the gradual and fairly regular southward 

 advance of the greater part of the flock across southern New 

 England, from the end of November through December and 

 January. That the birds pushed no further southward is evi- 

 dence that they found food enough to supply them until their 

 return, which, though difficult to trace, apparently occurred in 



VT. 



iN^H 



Map II. Distribution of the Pixe Grosbeak, Winter of 1S92-93. 



the early part of March. Several observers in eastern Massa- 

 chusetts, who were in the field throughout the winter, and kept 

 regular observations, reported a falling off in February, and a 

 marked increase in March. The latest records were f^itchburg, 

 April 2, and Arlington April 4. 



