We are also still getting Pine Siskins here and for a while when it was not so windy they and other birds were quite cooperative:  
 
http://harrisbirds.com/Pine%20Siskin%202.htm
 
Up to 4 Purple Finch and a Chipping Sparrow are also at the feeder.
 
I was at Lilypons for a few hours earlier this morning. It was really pretty windy but I did see a Black-capped Chickadee with a mixed flock including Carolinas.  This is the first irruption one I've seen, and it was strikingly different to the Carolinas (visibly so even without binoculars).  Also nice was seeing around 15-20 White-crowned Sparrows, all first winters.
 
Regards
 
Clive Harris
Cabin John MD