AMERICAN WARBLERS. 467 



Oct., when common in Mass, to N. J. and 

 Bahamas; north in May. Frequents swampy 

 thickets. Song 1 , a low sweet warble; alarm, 

 a very sharp note. Raises and lowers tail. 



528. MOURNING WARBLER. 



Smaller than last, wings shorter, differs 

 otherwise in absence of eye-ring and in 



Fig. 368 



Connecticut Warbler. 1-3. 



having more black on breast, fig. 369. 

 Breeds from northern N. E., west to Mich., 

 north to Canada; winters in north western 

 S. A., south in Aug. and Sept., north in 

 May. Frequents thickets on margins of 



