Amount offered to kidnap right-winger (4)
I believe the answer is:
bird
'amount offered to kidnap right-winger' is the definition.
I can't tell whether this definition defines the answer.
'amount offered to kidnap right' is the wordplay.
'amount offered' becomes 'bid' (I've seen this in another clue).
'to kidnap' is an insertion indicator (inserted letters are kidnapped or taken).
'right' becomes 'r' (common abbreviation).
'bid' placed around 'r' is 'BIRD'.
Can you help me to learn more?
(Other definitions for bird that I've seen before include "Creature - time in prison" , "Prison time (slang)" , "Nest builder?" , "Prison sentence - hawk, perhaps" , "porridge" .)