Tufted titmouse is just sitting at the feeder, or on the platter of seeds ... s/he seems

[Curmudgeoness]

1. I used to be a wildlife rehabber

and even with that experience, it is hard to give you suggestions. If the bird cannot be caught, there is not much you can do to help it. But it is not normal behavior for a titmouse, and there is definitely something wrong. I rehabbed even while I had cats in the house, so it was just a matter of closing doors to keep cats and wildlife away from each other. This bird may get weaker, at which time you might be able to get it. If you do catch it, put it in a shoebox or something similar sized padded with paper towels or something. Then call the Blue Ridge Wildlife Center for help (that looks like the closest rehabber in your area).

http://local.times-news.com/profile_map.aspx?listingid=10387207p

Don't give it food or water. Just give it a warm and quiet place in a box that it cannot get out of until you get more information.