Confused, walked like a duck with ducks (6)
I believe the answer is:
addled
'confused' is the definition.
(addling is a kind of confusing)
'walked like a duck with ducks' is the wordplay.
'walked like a duck' becomes 'waddled'.
'with' becomes 'w' (abbreviation).
'ducks' is a deletion indicator (some letters duck out of the word).
'waddled' with 'w' removed is 'ADDLED'.
(Other definitions for addled that I've seen before include "Confused like rotten egg" , "Rotten; muddled" , "Befuddled" , "Confused and vague" , "Confused like infertile egg" .)