OF EASTERN PENNSYLVANIA. 131 



This species was found by Dr. Gerhardt to ni- 

 dificate in northern Georgia, where its nests in 

 position, structure and size, were similar but 

 differed in the materials of composition; being 

 composed, externally, almost invariably of strips of 

 inner bark, and (lax-like fibres of vegetable origin, 

 with a lining of fine plant-stems, and in one case 

 of the feathers of Bubo Virriahus. In Georgia 



<5 A O 



almost every kind of bi'.sh or tree, is selected in 

 which to build; whereas, in Massachusetts, open 

 and thinly- wooded pasture lands, often not very 



remote from villages, are invariably chosen. In 



" 



i-outhern Illinois, in the oak barrens where it 

 breeds, it is exceedingly rare, according to the 

 authority of Mr. Ridgway. We have never known 

 it to breed in Philadelphia, and are disposed to 

 view it as only a temporary visitor. 



The female is very confiding and approaches 

 the nest without the exercise of any precautions; 

 and seeks not like many species on the intrusion 

 of human beings, to entice them away from the 

 site of her nest. 



The eggs vary from three to five and even to six 

 in number; they are oval in form, and marked 

 with spots of lilac, purple and umber-brown, upon 

 a white ground. They measure .68 by .48 of an 

 inch. 



Since writing the above, a nest of the Prairie 

 Warbler has been obtained by H. D. Minot, Esq., 

 in Northern New Hampshire, at the latitude of Mt. 

 Washington (44^), containing four eggs. It is 



