From my distance, I think about 40feet, it appears to be fairly tiny, much like a small canary sized. The black area around the eyes makes it look almost like a cardinal, except blue!
Looks like a bluebird to me what with it being a blue colored bird and all.
It is not a Mountain Bluebird based on its location however, and the Eastern Bluebird has a red breast so I think Andrew Pratt's answer (Indigo Bunting) is probably correct.