Home of twigs (4)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">home of twigs</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for nest that I've seen before include "Place of retreat" , "Avian structure" , "Bird's house" , "Home for a flier" , "Cosy place" .)