Large-billed tropical bird (6)
I believe the answer is:
toucan
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">large-billed tropical bird</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for toucan that I've seen before include "Bird with large, colourful bill" , "Tropical American bird with immense beak" , "arboreal dweller" , "Sounds as if a pair is able for the tropical bird" , "Colourful bird, big bill" .)