I saw two of them.
17 Jan 2010.
Morrisville Levee, Bucks Co, PA.
Glaucous Gull near the center, Herring Gulls in the lower right corner, the rest Great Black-backed Gulls.
Large, very pale gull, with uniformly-colored pale plumage. Bill is flesh-colored with dark tip. Pretty distant photos, but got good scope views. First winter gull.
1st cycle. Blacks Harbour, New Brunswick, Canada December 29, 2014
The Glaucous Gull (Larus hyperboreus) is a large gull which breeds in the Arctic regions of the northern hemisphere and the Atlantic coasts of Europe. It is migratory, wintering from in the North Atlantic and North Pacific oceans as far south as the British Isles and northernmost states of the USA, also on the Great Lakes. A few birds sometimes reach the southern USA and northern Mexico.