Clean up the seafront, seen in a mess (7,4,4)

I believe the answer is:

feather ones nest

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'clean up the seafront seen in a mess' is the definition.
I can't tell whether this defines the answer.

'the seafront seen in a mess' is the wordplay.
'in a mess' indicates an anagram.
'the'+'seafront'+'seen'='theseafrontseen'
'theseafrontseen' anagrammed gives 'FEATHER ONES NEST'.

Can you help me to learn more?

(Other definitions for feather ones nest that I've seen before include "get rich" , "Enrich oneself" , "Appropriate stuff" , "What a chat may do!" , "Accumulate wealth" .)

I've seen this clue in The Telegraph.

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