The Great Black-backed Gull is the largest species of gull in the world, known for its striking black back and wings. It has a white head and underparts, with a robust yellow bill that features a red spot. This bird typically inhabits coastal regions of the North Atlantic, from North America to Europe, and is often seen near fishing ports and beaches. These gulls are opportunistic feeders, consuming a varied diet that includes fish, crustaceans, and even carrion. They are known for their aggressive behavior, especially during breeding season, when they defend their nests vigorously. The Great Black-backed Gull plays an important role in the marine ecosystem as both a predator and scavenger.