White-faced Ibis (Plegadis chihi)Genus Plegadis / Family Threskiornithidae / Order Pelecaniformes / Class Aves / Phylum Chordata / Kingdom Animalia
White-faced Ibis in Worcester County, Maryland (10/11/2009). Found by Hans Holbrook during the Big Sit. This was Maryland's first fall record (its first outside of April/May). First for Assateague Island. According to Marshall Iliff (fide Hafner), there was at the time just one specimen record for October on the East Coast.
White-faced Ibis (Plegadis chihi) - Map
For now, here's a fun heat map representation of my personal sightings in iNaturalist courtesy of iNaturalist.