sheathbills

/SH IY1 TH B IH0 L Z/
noun
  1. 1

    Either of two species of scavenging birds in the family Chionididae which breed only on the Antarctic Peninsula and subantarctic islands.

Source: https://en.wiktionary.org/wiki/sheathbill, https://en.wiktionary.org/wiki/sheathbills