Seat covered in paper chains (5)
I believe the answer is:
Here is my best explanation:
'seat' is the definition.
(perch is a kind of seat)
'covered in paper chains' is the wordplay.
'covered in' indicates the answer is hidden within the clue.
'PERCH' can be found hidden inside 'paper chains'.
(Other definitions for perch that I've seen before include "Fish (with birds on!)", "Roosting place", "Imperial measure for a fish", "Fish and imperial measure", "rest of the bird?", "The rod", "Rod, pole or - -", "A fish; alighting place", "Old measure and bird's resting place" and "Freshwater fish - roost".)