AMERICAX AVARBLEKS. 31 



Song. To my ear, the song of the Chestnut-sided 

 Warbler is quite similar to the first part of that of the 

 Yellow Warbler, but it terminates differently, or perhaps 

 a few additional notes are added. This is the usual song 

 and is quite pleasing. They have all the characteristic 

 calls and alarm notes of other allied warblers. 



Migration and Breeding Range. The Chestnut- 

 sided Warblers arrive from the south the first week in 

 May or a little later. They scatter all over New Eng- 

 land, but are rather more numerous in the southern and 

 middle sections, than in the northern portion. At this 

 season they occur as far south as Northern New Jersey. 



They depart for the south the last week in August, 

 beins: one of the earliest warblers to leave New Eno^land. 



Winters from Eastern Mexico southward to Pana- 

 ma. Dr. Bryant records having seen a few in the Ba- 

 hamas in the spring of 1856, but I have never seen a 

 specimen there at any season. 



BAY-BKEASTED WARBLER. 



Deiidroica castanea. 



Plate III, Vi":. 5, male : Fi<^. 6, female. 



Size, 5.20 to 5.90. Beneath, buff, with throat, upper 

 breast and sides, bay or dark chestnut. Greenish buff 

 above, streaked with black. 



Male'. Greenish buff above, streaked with black on back. Spot on 

 sides of neck, bufi'. Top of head, dark chestnut. Broad band across fore- 

 head and on sides of head, black. Wing bands, white. White spots on 

 tail confined to two outer feathers, the form of which is given in fig. 27 

 A. Beneath, including under tail coverts, bufi", with throat and broad line 

 on sides, bay. 



FiMAi.i; Olive above, streaked Avith dusky. Crown, sometimes tinged 

 with chestnut. Beneath, buffy, usually with some trace of bay on head 

 and sides. 



