After everyone left, I stayed for a while in the Maintenance Yard and  
had...

Baltimore Oriole - one female
House Finch - 5 - flew in and out of the yard in quite a hurry
Brown Thrasher -1
Black-throated Green Warbler - 1
Yellow-bellied Sapsucker - 1
Blue-headed Vireo - 1
Ruby-crowned Kinglet - 2
American Goldfinch - 2

Cheers,
Steve Hersey
Washington, DC