What does the cryptic crossword clue "Flightless bird is back, by the sound of it (4)" mean?

The definition is "Flightless bird". The wordplay uses a homophone (sounds like). sounds like rear The answer is RHEA.

Flightless bird is back, by the sound of it (4)

Times Cryptic #29263 | 1 Down | 2025-06-23 flower