Crossword Genius

Birds, for example, disturb rest (6)

Ross

I believe the answer is:

egrets

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'birds' is the definition.
(egret is a kind of bird)

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for egrets that I've seen before include "creatures" , "Fliers" , "Greets in way of certain herons (" , "waders" , "Greets like fishing eagles" .)

I've seen this clue in The Globe and Mail.
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