Disturb canary, unfortunately, where it's protected? (4,9)

I believe the answer is:

bird sanctuary

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'where it's protected?' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.

'disturb canary unfortunately' is the wordplay.
'unfortunately' is an anagram indicator.
'disturb'+'canary'='disturbcanary'
'disturbcanary' is an anagram of 'BIRD SANCTUARY'.

Can you help me to learn more?

I've seen this clue in The Times.

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