At Mink Brook in Hanover this morning:

Many Winter Wrens singing, at least two seen as well.
Not twenty feet farther along the trail, three Carolina Wrens singing.
Also, lots of RC Kinglets heard but not seen, and several pairs of Mallards.

Back at home, a pair of bluebirds came by, clearly searching for a nesting spot. We put up a box and not long after they came back, the male examined the box, and they perched on it for a while. Hopefully they stick around.
here's the female bluebird: http://www.flickr.com/photos/68961563@N02/8663041473/in/photostream
Carolina Wren: http://www.flickr.com/photos/68961563@N02/8664142190/in/photostream/
Bloodroot flower at Mink Brook: http://www.flickr.com/photos/68961563@N02/8663045211/in/photostream/