JOURNAL OF MAINE ORNITHOLOGICAL SOCIETY. 3 1 



green swamps. I never .see it elsewhere except during the fall 

 migration, when it is found in thick tangled growths of bushes, 

 weeds and vines, also about brush fences by the roadside, and in 

 bushes and weeds about culverts. The call note is a grating "chip." 



The Blackburnian Warbler during the spring migration is often 

 found among the blossoms of the rock maple, a.ssociating with other 

 species of Warblers, but in the summer it inhabits the dense tops of 

 trees in growths of spruce and fir. It has quite a variety of songs. 

 One that is most often heard is doubtless often mistaken for the song 

 of the Black and White Warbler. 



The Black-throated Blue Warbler is a bird of the deep woods. 

 It prefers a mixture of deciduous and evergreen trees on damp 

 ground, with more or less young growth. It is inclined to be .soli- 

 tary, although it sometimes as.sociates with other species of Warblers 

 during the migrations. 



The summer home of the Olive-backed Thrush is evergreen 

 woods, but it is also found in growths of mixed deciduous and ever- 

 green trees. It is distinguished from the Veery by the black mark- 

 ings on its breast, and from the Hermit Thrush by the buff on its 

 throat and the uniform color of the upper parts. The Hermit Thrush 

 usually reveals its identity by slowly pumping its tail. The call note 

 of the Olive-backed Thrush is a fine, metallic "pit," like the sound 

 mcide by lifting a high-pitched harmonica reed with a knife blade. 

 Another note is a short, low whistle, not so prolonged nor so loud as 

 that of the Hermit Thrush. The song may be compared to the first 

 part of the Hermit Thrush's song in regard to length of utterance, 

 but it sounds more like the Veery's song. It is not clear like the 

 Hermit's song, but seems to peal forth in tremulous waves, and in 

 its surpassing sweetness outrivals any other bird's song that I have 

 ever heard. Olive-backed Thrushes like to feed in dense growths 

 of tall birch l;)ushes. Some of them may be seen up among the leafy 

 branches, feeding after the manner of the Vireo and Flycatcher, 

 while others search for food among the dead leaves on the ground. 



The Bay-breasted Warbler freely associates with other species 

 of Warblers during the migrations, but during the spring migration 



