OF EASTERN PENNSYLVANIA. 99 



The nest of this Warbler is built upon the 

 ground, and is unusually large for so small a 

 bird, being five inches in diameter and four inches 

 in height. A nest discovered by. the late Dr. 

 Alexander Gerhardt, in Georgia, was composed 

 externally of the desiccated leaves of divers 

 deciduous trees varioysly interwoven . with dry 

 sedges, black vegetable roots and fine strips of 

 bark, and the entire structure lined with fine 

 leaves, grasses, and roots interlacing each other. 

 According to the authority of the lamented Ger- 

 hardt, these nests are built under tussocks of 

 grass, in clumps of bushes, and on the ground. 



The eggs are from four to five in number, of a 

 pure white, with a few reddish-brown spots en- 

 circling the larger end. Their relative size varies 

 with the latitude. Some measure nearly .70 of an 

 inth in length and .53 in breadth ; others have a 

 measurement of .63 by .48 of an inch. 



Dendroeca (estiva, Baird. 



This beautiful and attractive species, the Blue- 

 eyed Yellow Warbler, is a not uncommon migrant. 

 It reaches our latitude during the first week of 

 May. Remarkably trustful it prefers man's so- 

 ciety to the wild retreats of nature. By its agree- 

 able ditty and familiarity it has won our favor and 

 esteem. 



Within the maples and horse-chestnuts that 

 line our principal thoroughfares it delights to 

 dwell, making them vocal with music. Upon the 



