charadrius vociferus

from WordNet (r) 3.0 (2006)

Charadrius vociferus
    n 1: American plover of inland waters and fields having a
         distinctive cry [syn: {killdeer}, {kildeer}, {killdeer
         plover}, {Charadrius vociferus}]

from The Collaborative International Dictionary of English v.0.48

Killdee \Kill"dee`\, Killdeer \Kill"deer`\, n. [So named from
   its notes.] (Zool.)
   A small American plover ({Charadrius vociferus}, formerly
   {Aegialitis vocifera}) of inland waters and fields having a
   distinctive cry. The adult has two black bands around the
   neck and upper breast, but the young chick has only the
   breast band. It ranges from Canada to Mexico and the West
   Indies.

   Syn: kildeer, killdeer plover, {Charadrius vociferus}.
        [1913 Webster + WordNet 1.5]

   Note: It is dark grayish brown above; the rump and upper tail
         coverts are yellowish rufous; the belly, throat, and a
         line over the eyes, white; a ring round the neck and
         band across the breast, black.
         [1913 Webster]