The most timely source of information about current sightings of birds both rare and common in the Carolinas is the carolinabirds mailing list. The most recent carolinabirds messages can be found at American Birding Association Birding News.
Notable sightings recently reported to eBird
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The Carolina Bird Club Rare Bird Alert has been discontinued. A historical archive of the Rare Bird Alerts from 2003 to 2008 is online.