WARBLERS 



(654) Dendroica CEerulescens 



CjeruleSCenS {Lat., becoming blue). 



BLACK - THROATED BLUE 

 WARBLER. Ad. cf — As shown 

 by the lower bird; upper parts dark 

 blue-gray, shading to lighter and 

 brighter on the forehead; face, throat 

 and broad stripe along the sides black; 

 large white spots near tips of inner 

 webs of outer tail feathers, and a white 

 patch at base of primaries. Ad. 9 — 

 As shown by the upper bird; olive- 

 brown above and yellowish-white be- 

 low; small white spot at base of pri- 

 maries, none or very little on tail 

 feathers. L.,5.00. 



Raiii^e — Breeds from Conn., Pa. 

 and Minn, north to Ont. and Quebec. 

 (654a) D. c. cairnsi. C.'\IRN'S 

 WARBLER is found in the Alleghe- 

 nies from Md. to Ga. 



YELLOW WARBLERS are regarded as one of the most 

 common and widely distributed species. They breed 

 throughout our range except for the extreme northern and 

 southern parts. Like golden bits of sunshine they flit 

 through open woods, the bushes bordering brooks, our 

 orchards or our shade trees apparently without preference. 



Their song can be confused only with those of Redstarts 

 and Chestnut-sided Warblers, and familiarity will easily dis- 

 tinguish it from either of these. It is a loud, lively, high- 

 pitched "sweet, sweet, sweet, sweeter," increasing in force 

 toward the end. They sing more freely than most warblers 

 and do not cease until in August. 



The majority of their nests are built in bushes or low trees, 

 not higher than ten feet above ground. The nest is a firmly 

 woven structure of gray fibres and down, lined with plant 

 down and hair. One nest I found near a cotton mill was 

 composed externally wholly of white cotton. They are very 

 often imposed on by Cowbirds and have been known to build 



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