* Great black-backed gull (Larus marinus): This is the largest gull in the world. It has a black back and wings, a white body, and a yellow beak.
* Lesser black-backed gull (Larus fuscus): This gull is similar to the great black-backed gull, but it is smaller and has a darker beak.
* Glaucous gull (Larus hyperboreus): This gull is found in the Arctic and sub-Arctic regions. It is a large gull with a white body, pale gray wings, and a yellow beak.
* Iceland gull (Larus glaucoides): This gull is similar to the glaucous gull, but it has a smaller bill and is found in the North Atlantic Ocean.
* Thayer's gull (Larus thayeri): This gull is found in the North Pacific Ocean. It is a medium-sized gull with a white body, pale gray wings, and a yellow beak.
* Western gull (Larus occidentalis): This gull is found along the Pacific coast of North America. It is a medium-sized gull with a white body, gray wings, and a yellow beak.
* California gull (Larus californicus): This gull is found along the Pacific coast of North America. It is a medium-sized gull with a white body, gray wings, and a red beak.
* Ring-billed gull (Larus delawarensis): This gull is found in North America. It is a small gull with a white body, gray wings, and a black ring on its bill.
* Franklin's gull (Larus pipixcan): This gull is found in North America. It is a small gull with a white body, black wings, and a red beak.