Source : Webster's Revised Unabridged Dictionary (1913)

Killdee \Kill"dee`\, Killdeer \Kill"deer`\, n. [So named from
   its notes.] (Zo["o]l.)
   A small American plover ({[AE]gialitis vocifera}).

   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.

Source : WordNet®

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