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It is difficult to tell for sure from the picture, but I would think it is likely to be a Carolina Chickadee based on the range. If you have heard them sing, that is the best way to tell the two apart. Below are the links for both on the Cornell lab of ornithology page. The song is on the page.
http://www.allaboutbirds.org/guide/carol...
http://www.allaboutbirds.org/guide/Black...