Might one be looking up a Spoonerism for Mrs Malaprop? (11)
I believe the answer is:
birdwatcher
'might one be looking up a spoonerism' is the definition.
I know nothing about this answer so I can't tell whether this works.
'mrs malaprop?' is the wordplay.
'mrs' becomes 'Bird'.
'malaprop?' becomes 'watcher' (I can't explain this - if you can you should give a lot more credence to this answer).
'bird'+'watcher'='BIRDWATCHER'
'for' acts as a link.
(Other definitions for birdwatcher that I've seen before include "Ornithologist" , "Student of nature" , "naturalist!" .)