584 Annals of the Carnegie Museum. 



present on May 31, when our spring observations were concluded. It 

 reappeared August 30, and doubtless remained well through October, 

 although on this point data are unfortunately lacking. For a time at 

 this season it was the most numerous of the warblers, but later was 

 perhaps exceeded in number by the Yellow-rumped Warbler. Mr. 

 Sennett's collection contains one specimen taken October 11, 1878; 

 doubtless, however, the species often remains somewhat later in the 

 fall. 



201. Dendroica blackburniae. Blackburnian Warbler. 



This dainty warbler occurs in moderate numbers during the migra- 

 tions in spring and fall, being perhaps most numerous at the former 

 season in 1900, when it arrived May 7, and was seen at intervals up 

 to May 22. In the autumnal movement it was the earliest warbler 

 to appear, coming August 21, and being noted several times thereafter 

 until the end of that month, while the last was observed as late as Oc- 

 tober 2. It is more partial to high woods than some of the other 

 warblers, rarely descending close to the ground. May 10, 1875, is 

 the date of a specimen in Mr. Sennett's collection. 



202. Dendroica virens. Black-throated Green Warbler. 

 Probably breeds in the coniferous woods of both the Peninsula and 



the mainland, as is the case farther south, but all our notes seem to 

 refer to transient individuals. It was recorded at the remarkably early 

 date of April 19, when a single one was seen and secured on the 

 wooded ridge southeast of the city, in a flight of Black-capped Chicka- 

 dees, Golden-crowned Kinglets, Snowbirds, and the like. It was not 

 again observed until April 30, but was seen subsequently at intervals, 

 the last on May 21. In the autumnal migration the first record re- 

 ferred to a bird picked up August 24 on the outside beach, perhaps 

 exhausted and drowned in attempting to cross the lake. September 

 14 the next was seen, and the last not until October 8. Mr. Simpson 

 notes that a few came in on April 26, 1902, with the big storm. 

 Other dates are May 21, 1894 (Bacon) ; May 9, 20, and September 

 16, 1875 (Sennett). 



[Dendroica kirtlandii. Kirtland's Warbler. 



One of the very rarest of the warblers, which should, however, occur at Erie, if 

 anywhere in Pennsylvania. Cleveland, Ohio, is the type locality, and there are num- 

 erous Ohio and Michigan records. It has within the last year been found breeding 

 in northern Michigan. (See Wood, Bulletin Michigan Ornithological Club, V, 

 1904, 3-13.)] 



