Where a rat's destroyed a bird (10)

I believe the answer is:

shearwater

'a bird' is the definition.
(shearwater is a kind of bird)

'where a rat's destroyed' is the wordplay.
'destroyed' indicates an anagram.
'where'+'a'+'rats'='wherearats'
'wherearats' is an anagram of 'SHEARWATER'.

(Other definitions for shearwater that I've seen before include "Manx --, seabird" , "Bird" .)

I've seen this clue in The Times.

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