Help identify this bird....

I hope this is enough for some of you birders to work with...I have seen it at my feeders and under them a few times the past couple days.  Not very often, and it doesn't stay for long.  It just flits in for a few minutes, and I do mean few...and then it is gone.

It is the one on the far side of the  cardinal.  It just does not sit still for long so no profile pic at all.  It is between the size of a house sparrow and the cardinal.  I would appreciate your best guess on what it is.  I am almost embarrassed to say what I think it might be.
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As you can see, we did end up getting snow.  It snowed all day long once it started.  We probably got 6 more inches of snow, and Roger says he thinks more.  When he went out to his shop this close to noon, he had to shovel 3 or 4 inches of snow, and then had to shovel a lot more when he came in tonight.

I have wasted another day for the most part...did get a little bit of sewing done and a load of laundry finished.  And since it was too much of a mess to get out and go out to eat, I fixed fried chicken, mashed potatoes and gravy, and green beans for our supper.  Roger loves me to fix gravy with fried chicken, but I very seldom do.

Edited to add:  Thanks to TexWisGirl!  She has identified it as a Fox Sparrow.  I think she is right!