Highlights were 4 breeding warbler sp., 3 vireo sp. and oriole nest building. 

Mostly at the Indian Springs fishing pond and adjacent loop trail:
yellow warbler
Northern parula
American redstart
worm-eating warbler - singing on the loop trail
white-eyed vireo
red-eyed vireo
yellow-throated vireo 
several Baltimore oriole pairs including one building its hanging nest
Eastern bluebird
American goldfinch
chipping sparrow
red-winged blackbird
tree swallow
blue-gray gnatcatcher
cedar waxwing
wild turkey

Dave Roberts
Bethesda