I 



Jones — Birds of Cedar Point. 113 



main nearly or quite a niontli. My latest fall record is October 2, 

 1001. The difficulty of positively distinguishing between this and 

 the next in the fall plumage makes careful scrutiny necessary. In 

 a good light and with strong glasses one may note the buffy of 

 this species as against the yellowish of the next. In my experience 

 the two species are about equal in numbers in the fall. 



210. Dendroica s?r/a/a.— Black-poll Warbler. 



Regular and sometimes common in the spring migrations, sel- 

 dom common in the fall. It is more strictly confined to the woods 

 than the preceding species, seldom being seen in town and about 

 residences. Birds in perfect breeding plumage are about in the pro- 

 portion of one to four of those in the immature and female plu- 

 mage, in the spring migration. Of course there are no breeding 

 plumages in the fall. McCormick and Wilder give this warbler as 

 common in the spring, abundant in the fall. They had no fall rec- 

 ords of the Bay-breasted. It is likely that they confused the two 

 species in the immature plumage and called all Black-poll. AVhat 

 they said about this species has never since been true at any rate. 

 The median date of spring arrival is May 14, and of departure. May 

 24, but there were two singing on June 2, 1903, and one full plum- 

 aged male June 3, 1904. I found it on East Sister island on August 

 28, and on Middle and Kelley's islands on September 1st, 1905. Fall 

 records indicate that it begins to migrate across the region about 

 the first of September, and may tarry well into October (October 

 IG, 1905). It was common on the sand spit May 13, 1907. 



211. Dendrolca ftisca. — Blackburnian Warbler. 



Common in the spring migrations, only twice recorded in the fall. 

 It is common wherever there are trees of considerable size, being 

 a familiar object in Oberlin during its spring sojourn. The median 

 date of arrival is May 5, and of departure. May 21 (May 29, 1909). 

 Fall records are September 24 three birds, October 15 one female, 

 190G. I have usually found it scarce along the sand spit, but on 

 May 13, 1907, it was nearly abundant. I found it on Pelee island 

 August 29 to September 1, 1905, but not on any of the other islands. 

 It was in company with the several other migrating warblers near 

 the south end of the point. It is unlikely that such a well marked 

 species would be wholly overlooked if it occurred regularly in fall. 

 It is perhaps significant that the two fall xecords given were for 

 the Cedar Point sand spit. Since it is fairly common on Point Pelee 

 during the fall migrations, according to Taverner and Swales, it 

 must make the passage to the south somewhere in the island re- 

 gion. At least not many migrate southward through the Vermilion 

 and Oberlin quadrangles. 



