Falcon is extremely tedious for keen birdwatchers, perhaps (9)

I believe the answer is:

hobbyists

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'keen birdwatchers perhaps' is the definition.
I can't judge whether this defines the answer.

'falcon is extremely tedious' is the wordplay.
'falcon' becomes 'hobby' (hobby is a kind of falcon).
'extremely' suggests removing the centre (only the extremes of the word are used).
'tedious' with its centre taken out is 'ts'.
'hobby'+'is'+'ts'='HOBBYISTS'

'for' acts as a link.

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I've seen this clue in The Times.

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