Crossword Genius

Parrot peck? Chop wings off! (4)

Ross

I believe the answer is:

echo

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'parrot' is the definition.
(both can mean to imitate or copy)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for echo that I've seen before include "call back" , "Reflection of sound wave" , "Repeat or reverberate" , "Rebounding sound" , "Evocation" .)

I've seen this clue in the Sydney Morning Herald.
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