Try to avoid payment for amphibian (8)

I believe the answer is:

duckbill

'amphibian' is the definition.
(duck-billed platypus)

'try to avoid payment' is the wordplay.
'try to avoid' becomes 'duck'.
'payment' becomes 'bill'.
'duck'+'bill'='DUCKBILL'

'for' acts as a link.

(Other definitions for duckbill that I've seen before include "Platypus" , "uniquely antipodean creature" .)

I've seen this clue in The Times.

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