A bird watcher never hides it (4)
I believe the answer is:
erne
'a bird' is the definition.
(erne is a type of bird)
'watcher never hides it' is the wordplay.
'ERNE' is hidden within the letters.
But, I am not sure how this is indicated.
Can you help me to learn more?
(Other definitions for erne that I've seen before include "Flier" , "Lough of the North" , "one that catches fish?" , "A high-flier" , "Irish river, loughs; sea bird" .)