ECOLOGY OF ISLE ROYALE. 379 



97. Wilsonia pusilla (685). Wilson Warbler. 



Eange: Eastern North America, Avest to and including the Rocky 

 Mountains, north to Labrador, Hudson Bay Territory, and Alaska. 

 Breeds chiefly north of the United States, migrating south to eastern 

 Mexico and Central America. 



Stations: Washington Harbor, forest near river, II, '04. 



Migration : August 31, September 5. 



Wilson's Warbler was one of the rarest of this family, only two birds 

 being observed on the island. On AugTist 31 a female was seen catch- 

 ing insects over the river and also picking something off the leaves on 

 an overhanging alder bush. The other was a male and was found in 

 nearly the same place. 



98. Sylnmia caruidensis (686). Canadian Warbler. 



Eange : Eastern North America, west to the Plains, and north to 

 New Foundland, southern Labrador and Lake W^innipeg; south in win- 

 ter to Central America and northern South America. Breeds from the 

 higher parts of the Alleghanies and the more elevated parts of southern 

 New York and southern New England, northward. 



Stations: Eock Harbor, Alder zone, I, 1. 



Breeding: July 8. 



Just above the beach at the head of tlije bay at Eock Harbor is a 

 partial clearing fringed with alders, and here among the bushes, fallen 

 trees, alders, birches, and spruce we found a number of warblers, among 

 them being the Eedstart, Canadian and Nashville Warblers. The 

 Canadian gave unmistakable evidence that it had a nest near by con- 

 taining young. It scolded and fussed, approaching the intruder and 

 fluttering i*apidly away as if frightened at every movement in its direc- 

 tion, all the while holding food in its mouth. 



99. Setophaga ruticilla (687). American Eedstart. 



Eange : North America, north to Fort Simpson ; west regularly to 

 the Great Basin, casually to California and Lower California; breed- 

 ing from the middle portion of the United States northward. In win- 

 ter, the West Indies, southern Mexico, Central Amei'ica, and northern 

 South America. 



Stations : Eock Harbor, Alder zone, I, 1 ; Benson Brook, II, 1. 

 Siskowit Bay, Outlet of Siskowit Lake, V, 9. 

 Washington Harbor, borders of clearings, I, '04; forest 

 along river, II, '04. 



Breeding : August 3 a male and young were seen. 



Migration : Last seen September 8. 



The Eedstart was a much rarer breeder on the island than one would 

 suppose. It was not near the limit of its range in any direction, and 

 the conditions were the same as found elsewhere where it is quite plen- 

 tiful. During migration it was quite common, but it never occurred 

 in flocks like the Tennessee or Blackpolls, but was usually found asso- 

 ciated with flocks of other species. The only young bird found was on 

 August 3, when a male Eedstart was seen feeding a young one near 

 the outlet of Benson Brook, II, 1. 



100. Anthus peitsi/lvanicvs (697). American Pipit. 



Eange: North America at large, breeding in the higher parts of the 

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