18 BIRDS OF NELSON COUNTY. 



weeks after their arrival from the South. They are said 

 to build their nests among the exposed roots of trees 

 along the streams, but I have never been able to find one 

 of them. 



Genus Oporornis. 



49. Oporornis agilis (Wilson). Connecticut Warbler. 



Transient ; rather rare. I have taken it only twice in the 

 spring — May 12th and 13th, and once in the fall — Octo- 

 ber 11th. 



50. * Oporornis formosa (Wilson). Kentucky Warbler. 



A common summer resident ; ai'rives about April 20th. 

 This handsome ground warbler is another bird that in- 

 dulges in the erroneous idea that he knows how to sing, 

 if one may judge from the stolid persistency with which 

 he grinds out liis wearisome ditty, but it doubtless has 

 the desired effect upon "Mrs. Kentucky," and he cares 

 not for the plaudits of any one else. 

 Genus Geothylpis. 



51. Geothylpis Philadelphia (Wilson). Mourning Warbler. 



Transient ; rather rare. I have only taken three speci- 

 mens, all in May. Its habits are very similar to the next, 

 but its song impresses me as being much finer. 



52. ^Geothylpis triohas (Linn.). Maryland Yellowthroat. 



An abundant summer resident. Arrives about April 

 20th ; departs October lOtli to 12th. An inhabitant of 

 bushes and tangled thickets in the neighborood of streams. 

 Very suggestive of the wrens in its nervous, jerky disposi- 

 tion and quick movements. Sometimes, during the breed- 

 ing season, the males indulge in a curious habit of flying 

 up obliquely to the height of thirty or forty feet, and 

 then descending, singing volubly all the time. 



