Source : Webster's Revised Unabridged Dictionary (1913)

Yellowthroat \Yel"low*throat`\, n. (Zo["o]l.)
   Any one of several species of American ground warblers of the
   genus {Geothlypis}, esp. the Maryland yellowthroat ({G.
   trichas}), which is a very common species.

Source : WordNet®

yellowthroat
     n : small olive-colored American warblers with yellow breast and
         throat