162 Contributions from the Charleston Museum. 



bier breeds along the low coast region of this state which, however, 

 is not a fact, and I doubt if it breeds anywhere within 125 or 150 

 miles of the coast. Mr. Leverett M. Loomis found the Yellow 

 Warbler breeding in the "cultivated valleys of Pickens county,"^ 

 but he did not detect it on Caesar's Head. 



The Yellow Warbler winters in Central and South America. 



257. Dendroicacaerulescens (Gmel.). Black-throated Blue 

 Warbler. 



Audubon states ^ that ' ' in South Carolina it arrives about the 

 25th of March, and becomes more abundant in April; but it has 

 left that country by the 10th of May." The statement that it 

 arrives about the 25th of March is erroneous as the earliest date 

 I have is April 16, 1890, and it must be remembered that the win- 

 ter of 1889-90 was exceptionally mild and the spring far advanced 

 in March. 



This species is very abundant during the spring and autumn 

 migration, when it inhabits deep, swampy woods which have 

 a dense undergi'owth of low bushes. I have detected it in spring 

 as late as May 16, but it is most abundant between April 27 and 

 May 6. In autumn it arrives with great regularity, and I give 

 two dates upon which the first birds have been observed, namely- 

 September 15, 1884, and September 13, 1888. 



On December 6, 1889, I shot an adult male on the plantation 

 of Mr. Isaac de C. Porcher, near Pinopolis. This bird is still in 

 my collection and was recorded in the Auk.^ 



The Black-throated Blue Warbler is more abundant in autumn 

 than in spring and it is not unusual to see scores in the course 

 of a few hours on almost any day between October 4 and 15. 

 By the 17th of the month most of the birds have migrated south- 

 ward. 



This handsome bird breeds from Pennsylvania northward 

 to Labrador (?) and Hudson Bay, and winters from Key West, 

 Florida, to South America. 



258. Dendroica caerulescens cairnsi Coues, Cairns' Warbler. 

 This form of the Black-throated Blue Warbler is a regular 



transient visitant during both migrations. As it is not possible 

 to identify the birds while at large and in company with D. ccerul- 



^Auk, Vll, 1890, 127. 2 Birds of America, II, 63. 3 VII, 1890, 410. 



