Beach bird (4)
I believe the answer is:
tern
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">beach bird</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 tern that I've seen before include "Long-winged aquatic bird" , "Seabird related to the gull" , "Small slender gull" , "Gull-like seabird" , "Winger" .)