The Washington Gap Analysis Project created breeding bird maps only. The non-breeding birds (e.g., wintering, pelagic (coastal), and birds expanding their ranges) are represented only by NatureMapping sightings.
The Washington Gap Analysis Project could not find any historical research records (i.e., Breeding Bird Atlas, Breeding Bird Survey, Bird Banding and Recovery) for 73 species of birds. The Ivory Gull is one of the species.
NatureMapping observations reported by townships throughout the year.
The Ivory Gull is a two-year arctic gull that winters in the Arctic seas. It is casual along the Atlantic coast to New York and inland to the Great Lakes. It nests on northernmost Arctic islands.Text edited by Gussie Litwer