30 JOURNAL OF MAINK ORNITHOLOGICAL .SOCIETY. 



During the spring migration and the breeding season the Ten- 

 nessee Warbler should be sought for in bogs of alder, hackmatack, 

 or young, partly dead, scraggly spruces. The spring migration is at 

 its height during the last week in May. This Warbler is a small 

 gra}' bird that looks like a Warbling Vireo on a small scale. Its 

 song is more prolonged, more complicated, and more sibilant than 

 that of the Nashville Warbler, and will never be mistaken for it if 

 one has the Nashville's song well fixed in mind. 



The Alder P'lycatcher arrives May 25th. It is al)undant in my 

 locality, but I never see it anywhere except in alders. It is a shy 

 bird and a persistent singer. It looks like a Least Flycatcher, and 

 its song, which is very difficult to describe, might be mistaken by a 

 careless listener for the song of the Phoebe. 



It is among the alders that I look for the Wilson Warbler, Pliil- 

 adel])hia Vireo, and Ruby-crowned Kinglet during the fall migration. 



I^ast September I saw a Philadelphia Vireo and a Nashville 

 Warbler near together in a small clump of alder bushes, where I 

 had a good chance to compare them. They seemed to be just about 

 the same size and looked very much alike. The upper parts were 

 olive green, the rump being brighter than the rest of the upper 

 parts. The under parts were yellow. They could be easily distin- 

 guished from each other in two ways, by the mark about the eye, 

 and by the feeding habits. The Nashville Warbler had an eye-ring 

 and was very active. The Philadelphia Vireo had a line above the 

 eye, and was similar in its movements to the other species of Vireos. 



In spring the Ruby-crowned Kinglet is found in .swamps of 

 cedar or fir, but during the fall migration it is found in more open 

 places, and shows a decided preference for alders. After the leaves 

 of most trees have fallen, it is often .seen or heard in the dense bushy 

 tops of young apple trees whose leaves are yet green. Its call note 

 is not easy to distinguish from that of the Winter Wren. The 

 Ruby-crowned Kinglet may be easily recognized by its habit of 

 flitting its wings, and by its almost perpetual motion, for it is never 

 still for but a moment at a time. 



The Winter Wren is a ground bird and an inhabitant of ever- 



