辽宁动物志 鸟类
鸥形目Lariformes
鸥科Laridae
鸥属
167.红嘴鸥Larus ridibundus Linnaeus
163.黑尾鸥Larus crassirostris Vieillot
166.灰背鸥Laruz schistisagus Stejneger
164.海鸥Larus canus Linnaeus
165.银鸥Larus argentatus Pontoppidan
168.黑嘴鸥Larus saundersi(Swinhoe)