- whooping crane, whooper, Grus americana - rare North American crane having black-and-white plumage and a trumpeting call
--1 is a kind of crane
--1 is a member of Grus, genus Grus - whooper, whooper swan, Cygnus cygnus - common Old World swan noted for its whooping call
--2 is a kind of swan
--2 is a member of Cygnus, genus CygnusDerived form: verb whoop1