Whooping swan

from The Collaborative International Dictionary of English v.0.48

Hooper \Hoop"er\, n. (Zool.) [So called from its note.]
   The European whistling, or wild, swan ({Olor cygnus}); --
   called also {hooper swan}, {whooping swan}, and {elk}. Hoopoe

from The Collaborative International Dictionary of English v.0.48

Whooping \Whoop"ing\,
   a. & n. from {Whoop}, v. t.
   [1913 Webster]

   {Whooping cough} (Med.), a violent, convulsive cough,
      returning at longer or shorter intervals, and consisting
      of several expirations, followed by a sonorous
      inspiration, or whoop; chin cough; hooping cough.
      --Dunglison.

   {Whooping crane} (Zool.), a North American crane ({Crus
      Americana}) noted for the loud, whooplike note which it
      utters.

   {Whooping swan} (Zool.), the whooper swan. See the Note under
      {Swan}.
      [1913 Webster]