This is the most striking part of the seagull's body. Some seabirds live for long periods at sea and only return to breed on land at the age of seven or eight. Seagulls often live in coastal waters or beside large inland lakes.
某些海鳥，如「雷森信天翁」長期生活在海上，到了七、八歲，才飛上陸地繁殖；海鷗則常在近海地區或大型內陸湖泊邊活動。