AMERICAN WARBLERS. 461 



duller; young, very dull. Breeds from 

 Conn, to Canada and west to 111.; winters in 

 Mex.; south in Aug. and Sept.; north in 

 May. Frequents open spots on margin of 

 woodlands. Song, four or five harsh, quite 

 rapidly given notes, ewe, followed by four 

 in quite a different time, a kind of trill, de, 

 ending abruptly, as if unfinished, uttered 

 as bird perches high in tree. A restless 

 species. 



522. TENNESSEE WARBLER. 

 Size of last; greenish above, white be- 

 low, head bluish, slight white line over eye, 

 fig. 365. Breeds in northern N. E. north to 

 Labrador, uncommon during migration east 

 of Alleghanies and Hudson River Valley; 

 winters in Central America, south in Aug., 

 north in May. Song, a little like last, but 

 first part in more divided and last shriller. 



523. PROTHONOTARY WARBLER. 



Larger, 5.40; greater part of head and 

 beneath, rich yellow; back, orange green; 



