48 GREATER RED-POLL 



occasions in spring, here in Massachusetts, is a very sweet, 

 continuous warble, not as lively as that of the Goldfinch, but 

 more melodious and pleasing. 



HoiboelFs Redpoll. 



ACANTHIS LINARIA HOLBOELLII. 



This well marked sub-species of the common Redpoll is lar- 

 ger, length, 6.00; wing, 3.00, but the form, outline of the 

 bill, and color is similar. 



HoiboelFs Redpoll is more northern in distribution, breed- 

 ing far north, seldom even reaching the United States in its 

 winter migrations, hence is very rare in Massachusetts. 



Greater Redpoll. 



ACANTHIS ROSTRATA. 



Outline of upper mandible decidedly curved ( see plate XI, 

 Fig. 2, b). The size is large, at least 6.00 long, and the streak- 

 ings are broader and heavier than in the Redpoll. The large 

 bill, which is about the size of that of a Tree Sparrow, and 

 darker, broader markings, are quite noticeable even at a dis- 

 tance. Rather more northern in distribution than the Red- 

 poll, and although it does not visit the United States every 

 winter, it is occasionally found in abundance even as far south 

 as Massachusetts, especially on the coast. 



Hoary Redpoll. 

 AOANTHIS EXILIPES. 



Size, small, not exceeding 5.00 : bill, very short, with the 

 outline of the upper mandible decidedly convex (see plate XI, 

 Fig. 2, a). The colors are much lighter than in the Redpoll, 



