ToiM): Birds ok ICrii; and Prfxjii'. Isle. 583 



every other warbler, even the Black-poll. This migration came to 

 an end in October, when the species was left in its normal numbers 

 for the winter, being recorded up to November 17. Additional 

 migration dates culled from specimens in Mr. Sennett's collection are 

 May 14, 1S75, and September 20, 1888. 



197. Dendroica maculosa. Black and Yellow Warbler. 

 Presumably a summer resident, if not on the Peninsula, then in the 



hemlock woods of the lake shore bluff, where the conditions are seem- 

 ingly favorable. However, it has been detected only during the 

 migrations, spring and fall, having been rather more numerous at the 

 latter season in 1900. May 15 was the apparent date of its vernal 

 arrival, and none were seen later than May 25. May 8, 1875, is the 

 date of an example in Mr. Sennett's collection. In the fall it was 

 observed as early as August 30, soon reaching the height of its abund- 

 ance, and lingering until October i. It is an inhabitant of the wood- 

 land and shrubbery during its stay. 



{^Dendroica cerulea. CERULEAN Warbler. 



This species may occur at Erie, as it has been found both to the west and east, in 

 Ohio and New York (compare Jones, Birds of Ohio, 1903, 180-181, and Davison, 

 Auk, \', 1888, 430). Farther south in Pennsylvania it is a common summer resi- 

 dent (Todd, Auk, VIII, 1891, 238).] 



198. Dendroica pensylvanica. Chestxut-sided Warbler. 



A summer resident species, moderately common on the Peninsula 

 in the scrub growth to which it is so partial in the breeding season. 

 It was first observed in 1900 on May 12, and noted at frequent inter- 

 vals during the remainder of the month. In the fall, however, it was 

 recorded but once, an immature example having been taken on Sep- 

 tember 14. It was observed also in June, 1897. Following are some 

 of Mr. Bacon's dates for the migration of this species : May 12, 1891, 

 ]May 14, 1892, May 13, 1893. Mr. Simpson saw one as early, how- 

 ever, as April 26, 1902. 



199. Dendroica castanea. Bay-breasted Warbler. 



One of the rarer migrants, detected in 1900 in the spring only, 

 single specimens having been taken on May 14, 18, and 21, all in the 

 wooded growth north of Misery Bay. 



200. Dendroica striata. Black-poll Warbler. 



Occurs as a transient visitant, common in the spring, more abundant 

 in the fall. At the former season it is among the last of the warblers 

 to migrate, not appearing (in 1900) until May 14, while it was still 



