Largest living bird (7)
I believe the answer is:
ostrich
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">largest living bird</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ostrich that I've seen before include "Torch is held over large bird" , "World's largest bird" , "Emu-like bird" , "Runner" , "Largest non-flying bird" .)