WARBLERS 



(660) Dendroica castanea 



(Wilson) (Lat., chestnut). 



BAY-BREASTED WARBLER. 

 Ad. cf — As shown by the upper 

 bird; crown, throat and sides rich 

 chestnut; forehead and auriculars 

 black; sides of necli light buff; two 

 white wing bars and white on the 

 outer tail feathers. Ad. 9 — Shown 

 by the middle bird; much duller, with 

 less brown on the under parts and 

 black replaced by graj'ish. Im. — As 

 shown by the lower bird; olive-green- 

 ish above and dull yellowish-white 

 below; wings and tail as on adults. 

 L., 5.50. N'cst — Of rootlets and 

 moss; in coniferous trees. 



Range — Breeds from Me., Ont. 

 and Newfoundland northwest to Al- 

 berta. Winters in Panama. Mass. 

 in spring, Ma}' 15; in fall, Sept. 15. 



known as the CHESTNUT-SIDED WARBLER. These 

 birds are gleaners of the lower strata of foliage, above which 

 the female is seldom seen, although the male often sits for 

 long periods at higher elevations to send forth his challenging 

 song at frequent intervals, a song not greatly different from 

 that of the Yellow Warbler and which might be expressed as 

 follows: "wee-see, wee-see, wee-see, wee-chew." It is rather 

 a thankless task to undertake to transfer bird songs to paper. 

 They really convey little meaning to the reader until he has 

 heard the songs himself. 



The Chestnut-side makes its home low down in bushes, 

 briers or sweet fern, the nest being just below the topmost 

 leaves where it is invisible except by stooping. It is woven 

 of rather coarse grasses and gray fibres, lined with fine brown 

 rootlets and firmly attached in upright forks. 



BAY-BREASTED WARBLERS are erratic in their mi- 

 grations. They are commonly regarded as rare and the 

 student is delighted to make a record of their observance. 



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