Bird is soaring above hide (6)
I believe the answer is:
siskin
'bird' is the definition.
(siskin is a kind of bird)
'is soaring above hide' is the wordplay.
'soaring' shows that the letters should be reversed in order (in a down clue, letters 'soar' up).
'above' is a charade indicator (letters next to each other) (in a down clue, some letters go above others).
'hide' becomes 'skin' (a hide is an animal skin).
'is' written backwards gives 'si'.
'si'+'skin'='SISKIN'
(Other definitions for siskin that I've seen before include "Greenish songbird of finch family" , "Breed of finch" , "Winger" , "Small yellow and black finch" , "Yellow-green finch" .)