Note : it may be the very similar Xylocopa virginica a male Eastern Carpenter Bee. I'm going with southern because you mentioned a noticeable blue abdomen. Bugguide mentions that southerns have a more purplish iridescent abdomen. Here are other details to distinguish them, though I don't believe visible in the photos.
http://entnemdept.ufl.edu/creatures/misc/bees/xylocopa.htm
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