Plume's source (5)
I believe the answer is:
egret
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">plume's source</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 egret that I've seen before include "one with plume" , "Kind of white heron - greet it" , "Type of heron" , "White-feathered wading bird" , "One of a pair of waders" .)