Family Laridae: Gulls and Terns

RARE (Annual or probably annual in small numbers; most such species occur at the perimeter of Alaska, in season; a few are scarce residents)
CASUAL (Not annual; these species are beyond the periphery of annual range, but recur in Alaska at irregular intervals, usually in seasonal and regional patterns)
ACCIDENTAL (One or two Alaska records)

Franklin’s Gull Larus pipixcan (2)	Iceland Gull Larus glaucoides (including thayeri)	Ross’s Gull Rhodostethia rosea
Little Gull Larus minutus (2)	Lesser Black-backed Gull Larus fuscus (2)	Ivory Gull Pagophila eburnea
Black-headed Gull Larus ridibundus (1)	Slaty-backed Gull Larus schistisagus	Sooty Tern Onychoprion fuscatus (3)
Bonaparte’s Gull Larus philadelphia	Western Gull Larus occidentalis (2)	Aleutian Tern Onychoprion aleuticus
Heermann’s Gull Larus heermanni (2)	Glaucous-winged Gull Larus glaucescens	Caspian Tern Hydroprogne caspia (1)
Black-tailed Gull Larus crassirostris (2)	Glaucous Gull Larus hyperboreus	Black Tern Chlidonias niger (2)
Mew Gull Larus canus	Great Black-backed Gull Larus marinus (3)	White-winged Tern Chlidonias leucopterus (2)
Ring-billed Gull Larus delawarensis (1)	Sabine’s Gull Xema sabini	Common Tern Sterna hirundo (1)
California Gull Larus californicus	Black-legged Kittiwake Rissa tridactyla	Arctic Tern Sterna paradisaea
Herring Gull Larus argentatus	Red-legged Kittiwake Rissa brevirostris	Back