yelper.

Tattler \Tat"tler\, n.
   1. One who tattles; an idle talker; one who tells tales.
      --Jer. Taylor.
      [1913 Webster]

   2. (Zool.) Any one of several species of large, long-legged
      sandpipers belonging to the genus {Totanus}.
      [1913 Webster]

   Note: The common American species are the greater tattler, or
         telltale ({Totanus melanoleucus}), the smaller tattler,
         or lesser yellowlegs ({Totanus flavipes}), the solitary
         tattler ({Totanus solitarius}), and the semipalmated
         tattler, or willet. The first two are called also
         {telltale}, {telltale spine}, {telltale tattler},
         {yellowlegs}, {yellowshanks}, and {yelper.}
         [1913 Webster]
    

Yelper \Yelp"er\, n.
   An animal that yelps, or makes a yelping noise. Specifically:
   (Zool.)
   (a) The avocet; -- so called from its sharp, shrill cry.
       [Prov. Eng.]
   (b) The tattler. [Local, U. S.]
       [1913 Webster]