72 BULLETIN UNITED STATES GEOLOGICAL SURVEY. [Yol.Y. 



return in larger mimbers about September 28, aud finally disappears 

 for the season, October 28, on the approacli of winter. It may breed, 

 sparingly, on tlie slopes of tlie Coteau, in the deep ravines. 



TURDUS SWAiNSONi ALICIA, (Bd.) Coues.—Alice'>s Thrush. 



Is seen here for the first time each season about the 20th of May ; is 

 not common at any time, and is generally confined to the dense fohage 

 of the thick undergrowths. I have never heard its song here. 



MiMUS CAROLiNENSis, (L.) Gr.—CatUrcl 



Appears about the 1st of June, and remains until the end of Septem- 

 ber, in large numbers. Breeds here. Is usually found in the low and 

 thick undergrowths, and is one of the most restless of our birds. 



Harpokhynchus rufus, (L.) Cixh.—Broivn Thrasher. 



Usually appears by the end of April, and remains until the end of 

 September, in limited numbers ; breeds here. The Brown Thrasher, as a 

 rule, is found only in thick titaber, the outer edges of which it occasionally 

 skirts, and I have found it to be very shy during the entu^e period of its 

 stay here, so that the acqmsition of specimens is very difdcult. 



SAXICOLID^. 



SiALiA siALis, (L.) Haldeman.— ^asferre Bluebird. 



The typical Eastern Bluebird is found here ; usually appears by the 

 10th of May, and I believe a very few remain through the summer in 

 some of tlie heavily wooded ra^^nes on the slopes of the Coteau, as now 

 and then one is seen in July and August. Is at no time common. 



PAEID^. 



Parus atricapillus, hmm—BlacJc-capped GhieJcadee. 



Is seen from September 28 until November 14, and occasionaUy later, 

 in large numbers. When nearly aU of our small birds have departed, 

 the Black-capped Chickadee remains to represent bird-life during that 

 short interval between faU and ^vinter. I have rarely observed it here 

 after i^ovember, and presume it departs before winter fairly commences. 



TEOGLODYTID^. 



TRoaLODYTES DOMESTicus, (Bartr.) Cones.— Souse Wren. 



June G, 1877, 1 secured at the Post one specimen of true T. domcsticuSj 

 and not var. jtarhmani, the usual Western Wren. Several were seen in 

 the woods during the summer of 1877, which were probably of the latter 

 variety, but no specimens were secm^ed. Tut. 2)arhncmi arrives in May, 

 aud, I believe, does not take its departure before October. 



