Bird-like (5)
I believe the answer is:
avian
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bird-like</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 avian that I've seen before include "Like a booby" , "Resembling a bird" , "Lizard with adhesive foot-pads" , "To do with birds - like a dangerous flu" , "Relating to birds" .)