hornbills

/HH AO1 R N B IH0 L Z/
noun
  1. 1

    Any of various birds of the family Bucerotidae, with bills resembling a cow's horn. Many species have a casque above the bill, and many imprison their young in a tree.

Source: https://en.wiktionary.org/wiki/hornbill, https://en.wiktionary.org/wiki/hornbills