According to this article which was front-page on the eBird.org home page today (2013-09-12), over the next few days eBird is updating their database to adjust for this year’s modifications to bird taxonomy.  Some of the changes are pretty extensive but most do not appear to affect the ABA area.  The one that does is the Sage Sparrow which is being split into 2 species: Sagebrush Sparrow and Bell’s Sparrow (formerly a subspecies).  Check your records (I found a single Sage Sparrow sighting from December 2002).