NATURAL HISTORY OF THE SWAINSON'S WARBLER 35 



covered the ground where there was more light. The Swainson's 

 Warbler foraged mostly in openings between clumps of sweet 

 pepperbush and greenbrier and in the small pure stands of 

 sweet pepperbush. It nested mostly in the greenbrier tangles. A 

 community of this composition also is the major Swainson's 

 Warbler habitat in the Pocomoke Swamp on the Eastern Shore of 

 Maryland. 



I counted eight territorial males along a 0.5-mile transect in the 

 vicinity of the Virginia-North Carolina line on April 20, 1958. 

 Bird associates during the breeding season in the sweet pepper- 

 bush-greenbrier undergrowth are the White-eyed Vireo, Prothono- 

 tary Warbler, Prairie Warbler (Dendroica discolor), Ovenbird, 

 Hooded Warbler, and Cardinal. The presence of the Prairie War- 

 bler in this habitat was most unexpected, since nowhere else have 

 I encountered it breeding in closed-forest habitat. An interesting 

 breeding bird of this same swamp forest, but at higher elevations, 

 is Wayne^s Black-throated Green Warbler (Dendroica virens 

 waynei) . 



Bayou Boeuf Swamp, La., and Monkey John Swamp, S.C. 



Observations were made in the scrub palmetto breeding ground 

 habitat in Bayou Boeuf Swamp near Alexandria, La., in the spring 

 of 1956 and 1957, and in Monkey John Swamp near Savannah, 



Figure 15. — Part of scrub palmetto territory of a male Swainson's Warbler 

 in Monkey John Swamp, Jasper County, S.C, May 1964. 



