spike-tail

from The Collaborative International Dictionary of English v.0.48

Pintail \Pin"tail`\, n.
   1. (Zool.) A northern duck ({Dafila acuta}), native of both
      continents. The adult male has a long, tapering tail.
      Called also {gray duck}, {piketail}, {piket-tail},
      {spike-tail}, {split-tail}, {springtail}, {sea pheasant},
      and {gray widgeon}.
      [1913 Webster]

   2. (Zool.) The sharp-tailed grouse of the great plains and
      Rocky Mountains ({Pedioc[ae]tes phasianellus}); -- called
      also {pintailed grouse}, {pintailed chicken},
      {springtail}, and {sharptail}.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Spiketail \Spike"tail`\, n. (Zool.)
   The pintail duck. [Local, U.S.]
   [1913 Webster]