108 Grundtvig—On the Birds of Shiocton, Wisconsin. 
52. Accipiter cooperi (Bonap.). XX Scarcely seen in winter. 
M. (N.) $ (4) L. 373-404. W. 238-275. T. 151-163. $ (2) L. 
473-487. W. 265-317. T. 207-214. In a male shot May 11, 
1882, the 3d primary was longest, the 2d and 5th of equal 
length. This hawk is the most abundant diurnal bird of prey at 
Shiocton. In spring the woods resound with its doleful flute note, 
and it nests in many places. In 1882 two pairs built on the 
road between the house and Shiocton. One nest was placed in 
an elm over Shioc River, the other in a larch in the Pine 
Wood. In 1883 they were less numerous, and the above men- 
tioned nests were not used. 
53. Accipiter atricapillus (Wils.). M. of young bird shot 
September 10, 1882. L. 357. W. 343. T. 252. Probably seen 
many times. Breeds rarely in northern portions of the United 
States (C. L.). 
54. Bnteo borealis (Gmel.). M. of $ shot October 22, 1883. 
L. 557. W. 380. T. 194. B. 34. Very abundant, at any rate in 
migration. B. lineatus (Gmel.) is said to breed in great num¬ 
bers in Wisconsin (King), but was not shot by me at Shiocton. 
B. swainsoni Bonap. is also said to breed in the state (King). B. 
latissimus (Wils.) is common in large woods. I probably saw 
several species of this genus, but I cannot say so positively. 
55. Arcliibuteo lagopus sancti-joliaimis (Gmel.). xxx M. 
of 3. L. 529-564. W. 393-417. T. 226-244. Perhaps the 
most numerous of all birds of prey in migration time. Had its 
especial haunt at Shioc Meadows. 
Aquila chrysaetos (Linn.) is a winter visitor in Wisconsin (King). 
56. llalheetus lencocepliallis (Linn.). Frequently seen 
throughout the summer. A nest was found in an old pine tree 
near Shiocton about 70 feet from the ground. It had been used 
for many years; but June 13, 1883 the owner cut down the tree 
and put the two not fully fledged young in a cage. In 1882 the 
first was seen April 24; in 1883 two were seen the 28th. 
(57.) Falco peregrinus anatum (Bonap.). Think I have seen 
this species several times, even in summer. 
58. Falco coliimbarius Linn. M. of $ shot Oct. 9, 1882. L. 
283. W. 189. T. 119. B. 16. Abundant, at any rate in migra¬ 
tion. 
