American Herring Gull Armenian gull Belchers gull Black-tailed gull California gull Caspian gull European herring gull Glaucous gull Glaucous-winged gull Great black-backed gull Heermanns gull Iceland gull Kelp Gull Lesser Black-backed Gull Mew Gull Pacific Gull Ring-billed gull Short-billed gull Vega Gull Western gull Yellow-legged gull