Physical Features and Habitats II 



Broad-winged Hawk, Acadian Flycatcher, Fish 

 Crow, Worm-eating and Kentucky Warblers (the 

 Barn Owl, Cardinal, Blue-winged Warbler and 

 Chat being equally abundant in the Chester val- 

 ley, and the Mockingbird, Carolina Wren, Tufted 

 Tit and Carolina Chickadee are more often found 

 in the southern part of the county) ; all are more 

 or less typical of the Carolinian fauna. 



The Black-billed Cuckoo, Scarlet Tanager and 

 Black and White Warbler are more or less com- 

 mon, and the occasional presence in the summer of 

 the Bobolink, Swamp Sparrow, Rose-breasted Gros- 

 beak, Tree Swallow, Chestnut-sided Warbler and 

 Redstart, would suggest that a more careful sur- 

 vey of the somewhat higher ground of the north- 

 western section might reveal a stronger element of 

 the Transition zone. 



The so-called "Paoli barrens" is an exposed bed 

 of serpentine rock, about eight miles in length and 

 from a few hundred feet to more than a mile in 

 breadth ; beginning more than a mile south of Paoli 

 and extending nearly to West Chester. The few 

 inches of humus gives sufficient sustenance to a 

 coarse native sedge grass, a tangle of greenbriers 

 (Smilax glauca and S. rotundifolia) and a stunted 

 growth to scattered groves of scrub-oak (Quercus 

 stellata, Q.marylandica, O.ilicefolia and Q.pruio- 

 ides), red cedar (Juniper virginiana), pitch pine 

 (Pinus rigida), and among the common herbaceous 

 plants, Talinum tereti folium 1 is typical of the ser- 

 pentine. In this untillable tract the Mourning 

 Dove, Long-eared Owl and Nighthawk find congen- 



