OF ARTS AND SCIENCES. 99 



August 25, 1898, an immature bird was shot in the Saco valley. 

 On one or two other occasions, however, I am confident that I 

 have observed it there in the month of August. At Chocorua, 

 Frank Bolles ('93b p. 100) records it in August, and it doubt- 

 less breeds in that vicinity. 



107. Buteo platypterus (Vieill.). BROAD -WINGED 

 HAWK. 



A fairly common summer resident of the dense mixed woods 

 of the sub-Canadian area. In the White Mountain region and 

 northward, it is the commonest breeding hawk, but in central 

 and southern New Hampshire it is less common except along 

 the ridge of the western part of the state. Dr. W. H. Fox 

 writes me that years ago he found a nest and young at Hollis 

 on the southeastern border. Mr. G. H. Thayer finds it not un- 

 common about Monadnock, and I have seen it in summer along 

 the range of hills west of Newfound Lake, where, however, it is 

 rare. In the White Mountains it breeds in the woods up to the 

 limit of large tree growth, about 2,500 feet. Like many of the 

 hawks, it shows attachment for a chosen locality, and I have 

 known of a pair at Intervale which nested for several seasons in 

 a large beech tree in the forest. The nest was a huge pile of 

 sticks in a crotch of the tree, and evidently the accumulation of 

 years. Portions of two or three dead garter snakes were found 

 in the nest, which at the time of my visit on July 22, 1898, con- 

 tained two young birds ready to fly. 

 Dates: April to September 15. 



108. Archibuteo lagopus saiicti-johaimis (Gmel.). 

 AMERICAN ROUGH-LEGGED HAWK. 



An uncommon fall and winter visitant, sometimes occurring 

 in flights of considerable numbers. Mr. C. F. Goodhue ('85) 

 mentions it in a list 01 birds observed in winter at Webster, 

 and states that one specimen in black plumage was taken. Mr. 

 Ned Dearborn ('98, p. 15) says that he is informed by a Mr. 

 Henry Osgood of Pittsfield, of a large number that " passed in 

 loose flocks over Catamount Mountain in this town one day late 

 in November, a few years ago. He also has a mounted speci- 



