Winger found contract in pamphlet (10)
I believe the answer is:
flycatcher
'winger' is the definition.
(flycatcher is a kind of bird)
'contract in pamphlet' is the wordplay.
'contract' becomes 'catch' (to catch an illness is to contract it).
'in' means one lot of letters goes inside another.
'pamphlet' becomes 'flyer' (I've seen this in another clue).
'catch' placed within 'flyer' is 'FLYCATCHER'.
'found' is the link.
(Other definitions for flycatcher that I've seen before include "one that may be spotted singing" , "sticky leg trap" , "Bird" , "airborne killer" .)