Bird of peace (4)
I believe the answer is:
dove
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bird of peace</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for dove that I've seen before include "Bird; advocate of peace" , "Mourning, collared, bird" , "Small pigeon" , "plunged in the Grand Canyon" , "Bird representing peace" .)