Trimming or decoration for a bird, perhaps (5)
I believe the answer is:
braid
'trimming' is the definition.
(braid is a kind of trimming)
'a bird perhaps' is the wordplay.
'perhaps' indicates an anagram.
'a'+'bird'='abird'
'abird' with letters rearranged gives 'BRAID'.
'or decoration for' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for braid that I've seen before include "decoration" , "Woven ornamental trimming or plait of hair" , "woven fabric" , "Ornamental tape or plait" , "Intertwine (hair)" .)