One roves dodging ducks and butterflies (6)
I believe the answer is:
nerves
'butterflies' is the definition.
(I've seen this in another clue)
'one roves dodging ducks' is the wordplay.
'dodging' indicates named letters should be taken away.
'ducks' becomes 'oo' (I've seen this in other clues).
'one'+'roves'='oneroves'
'oneroves' with 'oo' taken away is 'NERVES'.
'and' acts as a link.
(Other definitions for nerves that I've seen before include "Uneasy psychological state" , "Bodily fibres that convey sensations" , "They carry information between brain and body" , "Fibres that convey feelings" , "Bodily fibres conveying sensations" .)