Nocturnal birds (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">nocturnal birds</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 owls that I've seen before include "Nocturnal hooters?" , "Slow kind of birds" , "Types incredibly wise" , "Slow (anag) -- birds of prey" , "Night birds" .)