Rents adjusted for fliers (5)
I believe the answer is:
terns
'fliers' is the definition.
(tern is a kind of bird)
'rents adjusted' is the wordplay.
'adjusted' is an anagram indicator.
'rents' with letters rearranged gives 'TERNS'.
'for' is the link.
(Other definitions for terns that I've seen before include "Seabirds" , "Aquatic birds" , "Rents out these birds" , "Sea birds with long forked tails" , "Sea bird with long forked tail" .)