sheathbill
/ˈʃiːθbɪl/noun
1- a mainly white pigeon-like bird with a horny sheath around the base of the bill, breeding on the coasts of sub-Antarctic islands and feeding by scavenging鞘嘴鸥。
1.1
- Family Chionididae and genus Chionis: two species.鞘嘴鸥科, 鞘嘴鸥属：2种。