On a day trip mostly devoted to finding some of the less common salt  
marsh specialist skippers and butterflies, I did spend about an hour  
watching two adult RED-HEADED WOODPECKERS feed young in a dead pine  
snag in the second copse of pines on your right as you turn off the  
Wildlife Drive toward the marsh trail.  Another single adult red- 
headed worked some scattered trees in the marsh halfway along the  
Wildlife Drive.   Low water levels from the breezy north wind pushing  
water out of the marsh combined with low tides to make it a poor day  
for waders and shorebirds, but a number of GRASSHOPPER SPARROWS were  
singing from the dikes, and EASTERN MEADOWLARKS were more common on  
the Refuge than I have seen in some time.