Homing bird (6)
I believe the answer is:
pigeon
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">homing bird</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for pigeon that I've seen before include "Business" , "See 1 Across" , "Homer, possibly" , "Baby" , "Seed-eating bird" .)