The first birds that arrived were house sparrows that visited Wednesday afternoon and Thursday morning - perhaps they remember the feeders from last year. Last year it took at least a week to attract any birds. The feeders have also attracted a cardinal, song sparrow and a pair of mourning doves by the following Sunday.
Update: December 20th
+ single American Goldfinch female
Update: December 25th + Blue Jay
(Song Sparrow seems to be a regular visitor - might be same one that hung around last winter)
Update: December 29th + White Throated Sparrow
+ Junco
+ Starling
Update: January 11th + Chickadees
Update: January 18th + Carolina Wren
Update: (recent) + Brown Headed Cowbird
+ Red Winged Blackbird