Birds, for example, disturb rest (6)
I believe the answer is:
egrets
'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" .)