562 Annals of the Carnegie Museum. 



i 20. Chaetura pelagica. Chimney Swift. 



This species occurs as a summer resident, and perhaps nests on the 

 Peninsula, having been seen by the writer about the lighthouse build- 

 ings in June, 1899. It is also rather common in the city, but its first 

 appearance in 1900 was overlooked. In the fall the last was seen 

 September 20, this being, indeed, our only record at that season, but 

 in Mr. Sennett's collection there is a specimen taken as late as October 

 10 (1874). 



121. Trochilus colubris. Ruby- throated Hummingbird. 



Here as elsewhere in the United States a summer resident, appa- 

 rently not very common. It was not observed in the spring of 1900 

 until May 21, but its real arrival probably took place two or three 

 weeks earlier. In the fall it was noted last on September 9. 



122. Tyrannus tyrannus. Kingbird. 



A common summer resident on both the Peninsula and the main- 

 land, appearing early in May (May 7, 1893; May 8, 1901, Bacon). 

 In 1900 its arrival was recorded May 3, when a half dozen individuals 

 were seen together at Crystal Point. It was noted but twice in Au- 

 gust, and the last was seen on September 1 . 



123. Myiarchus crinitus. Crested Flycatcher. 



A summer resident, not very common, at least on the Peninsula, 

 where it is confined to the wooded ridges. It may possibly be more 

 numerous on the mainland, where it was first observed in the spring 

 of 1900 on May 3, at the " Head." In the fall the latest record was 

 September 10, the period of its stay being thus but little longer than 

 that of the Kingbird. 



124. Sayornis phcebe. Phoibe-bird. 



A common summer resident in this general region, although not 

 actually detected as such on the Peninsula, the character of the ground 

 being unsuited to its needs. However, it was quite common there 

 for a time during the spring migration, and also in the fall to a less 

 extent, haunting the margins of the various ponds. April 3 was the 

 date of its first appearance, and it was recorded as common on April 

 12. There were two records each for August and September, and 

 the last was seen October 4. Additional records for the spring migra- 

 tion are March 29, 1875 (Sennett), and March 31, 1892 (Bacon). 



125. Nuttallornis borealis. Olive-sided Flycatcher. 



Contopus borealis, Baird, Birds of North America, 1858, 188.— A. O. U. Check- 

 List, 1883, 233, and of recent authors generally. 



