Study of the Avi-fauna of Lake Erie Islands. 185 



this thrush without success. Everything, as far as one conld judge. 

 \yas favorable for the nesting of this species on the ish^nd. 

 Hylocichia fiiscescens fuscescens. — Veery. 



One was recorded on August 18, 1908, and the following records 

 for 1910 : August 26, 2 ; 27, 1 ; 28, 3 ; 30, 1 ; 31, 1 ; September 1, G. 

 These were clearly migrating birds. Careful search was made for 

 the thrushes at the beginning of the 1910 work, in the expectation 

 of finding this species nesting in some numbers, but none were 

 found. 

 Hylooichla alicia; alicice. — Gray-cheeked Thrush. 



The only certain record was one taken on September 3, 1910. 

 It seems likely that there must have been a distinct migration, 

 either unnoted by us or else after our departure. The light was 

 often so poor, in the thick growth of the cedars, that it was not 

 possible to make certain of the identification of the swarming 

 thrushes. 

 Hylocichia itstulata swainsoni. — Olive-backed Thrush. 



As recorded elsewhere (antea, p. 16) the Olive-backs became sud- 

 denly common on the morning of August 31, 1905, and continued 

 so while we remained on the island. Other visits were too early. 

 In 1910 the first was found on August 29, the next six birds oQ 

 September 1, and several each day while we remained, but there 

 was no big rush such as occurred in 1905. 

 Planesticus migratorius migratorius. — Robin. 



Present on all visits in considerable numbers. There were more 

 seen inland than on the point, and no migratory movement was 

 noted. Of course the birds nested on the island. 

 Sialia siali's sialis. — Bluebird. 



There were a few records for the point, none of migrating birds. 

 The birds were not uncommon in the interior of the island, where 

 they had evidently nested. 



One of the surprising things which this summer and early 

 autumn study on Pelee Island brought out, and which it 

 needed the following summer's work on Point Pelee to cor- 

 roborate, was the evident southward movement of young- 

 birds in advance of the old ones. Thjs was first noticed in 

 the Cowbird and Red-winged IHackbird, and later in both 

 orioles and practicallv all of the warblers. With the swal- 

 lows and martins it was not so clearly marked because the 

 old and young plumages are not so readily distinquished. 1 



