This species breeds in coastal California and southern Oregon, and winters in western Mexico.
The state's first reported Allen's Hummingbird  was banded in Manteo. This young male survived the blizzard there and was present for eight weeks from mid-January through mid-March 2003.
12/7/12 - Another Allen's Hummingbird was just discovered at Riverbend Park, along the Catawba River near Hickory, NC:
West Coast hummingbird visits Catawba County park  - Charlotte Observer, Dec 6, 2011
More about Allen's Hummingbirds: