The ivory gull often follows polar bears to feed on the remains of seal kills.
象牙海鸥经常跟在北极熊的后面吃剩下的海豹尸体。
英语百科
Ivory gull
The ivory gull (Pagophila eburnea) is a small gull, the only species in the genus Pagophila. It breeds in the high Arctic and has a circumpolar distribution through Greenland, northernmost North America, and Eurasia.