BIRDS OF DURHAM AND VICINITY. 
Ill 
Acanthis linaria holbcellii. Holbcell's Redpoll. 528a. 
A variety slightly larger than linaria, and with a longer bill, not 
distinguishable, however, out of hand, from the common Redpoll 
with which it associates. 
Acanthis linaria rostrata. Greatek Redpoll. 528b. 
Another variety occurring under the same circumstances as the last. 
It is decidedly darker than Wiaria, and larger, averaging 51 inches in 
length. Both of these varieties are likely to be found any •' Redpoll 
wdnter." 
Ammodramus henslowii. Henslow's Sparrow. 547. 
This sparrow has been found breeding at Salisbury, this state, by 
Mr. C. F. Goodhue, and quite likely may be found here. If found at 
all it will probably be confined to some particular swamp or meadow, 
as its regular habitat is farther south, 
Ammodramus caudacutus nelsoni. Nelson's Sparrow. 
549a. 
This is a sub-species of our Sharp-tailed Sparrow that breeds in 
the Mississippi valley, but has been taken along the New England 
coast in migrating time. It is larger than candacutus proper, more 
sharply striped on the back, and with chest and sides deep buff. 
Ammodramns caudacutus subvirg-atus. Acadian Sharp- 
tailed Sparrow\ 549b. 
Another sub-species of the Sharp-tailed Sparrow^ which replaces 
the type in Maine and the Provinces. It is similar to caiidacittiis 
proper in size, but is paler in color, has less streaks, and a smaller 
bill. This variety is said to be found during the migrations on the 
salt marshes. 
Guiraca cserulea. Blue Grosbeak. 597. 
According to Chamberlain (NuttalPs Ornithology, 1896, p. 372) 
this Grosbeak has been taken in Massachusetts, Maine, and New 
Brunswick. 
Pirang-a ludoviciana. Louisiana Tanager. 607. 
This tanager has been taken in Maine and Massachusetts. It is an 
accidental visitor from the Great Plains. 
