ECOLOGY OF ISLE ROYALB. 349 



to the fii'st clearing in search of small birds, many of which they caught 

 in the burned area where Savanna and Lincoln Sparrows were quite 

 abundant. 



20. Accipiter atricapillus (334). American Goshawk. 



Eange r Northern and Eastern North America, south in winter to 

 the middle states and southern Rocky Mountain region; casually west 

 to Oregon. Breeding range restricted to the Canadian towns of the 

 United States and northward. 



Stations : Rock Harbor beach, I, 1, 4. 



Breeding: Young seen and secured on July 26, 1905. 



This rare hawk was seen but twice, once on a tree at the edge of the 

 beach ( I, 1) and again in the birch and spruce forest near the tamarack 

 swamp (I, 4). This latter bird was secured and proved to be a young 

 male. Professor W. B. Barrows, in a recent letter to the wi'iter, gives this 

 bird in Michigan as a "winter visitor," "irregular and no nesting data." 

 The specimen secured was probably raised on the island, as July 26, 

 the date when taken, is very early, for the migration of hawks especially 

 for the immature birds, even in this northern region. Although a 

 few Sparrow and Sharp-Shinned had already appeared at Washington 

 Harbor at this date, they were nearly all old birds, and I think had 

 simply gathered there from the surrounding territory. From all 

 observations made, it seems evident that the young of the hawks do 

 not migrate until some time later; therefore it seems probable that this 

 immature male was bred on the island. 



21. Buteo iorealis (337). Red-tailed Hawk. 



Range: Eastern North America, west to the Great Plains, north to 

 about 60°, south to eastern Mexico.. Breeds throughout its range, ex- 

 cept possibly the extreme southern portion. 



Stations: Rock Harbor, II, 1. 



Resident: July 14. 



The Red-tailed Hawk was only observed once during the two seasons 

 spent on the island. This specimen was seen flying over a small clear- 

 ing (II, 1) at Rock Harbor on July 14. 



22. Buteo lineatus (339). Red-shouldered Hawk. 



Range: Eastern North America to Manitoba and Nova Scotia; west 

 to Texas and the Plains; south to the Gulf states and Mexico. Breeds 

 throughout its range. 



Stations: Rock Harbor, IV, 1. 



Resident: July 20. 



Like the Red-tailed, this hawk proved to be very rare, the only record 

 being that of July 20 when one was seen pursuing a pair of Bald Eagles 

 near the head of Tobin Harbor. 



23. Buteo platyptcrus (343). Broad-winged Hawk. 



Range: Eastern North America, from New Brunswick and the Sas- 

 katchewan region to Texas and Mexico, and thence southward to north- 

 ern South America and the West Indies. Breeds throughout its United 

 Btates range. 



Stations r Washington Harbor, I, '04 (clearing), X, '04. 



Migration : August 30, September 5 and 12. 



This hawk was rare on the island and was only observed as a migrant. 

 A single specimen was seen at the camp clearing (I, '04) on August 



