What does the cryptic crossword clue "Falcon e.g. after flying has sad expression (4,4)" mean?

The wordplay uses an anagram. anagram of FALCON + E.G. = LONGFACE The answer is LONGFACE.

Falcon e.g. after flying has sad expression (4,4)

Daily Mail Cryptic #17512 | 16 Down | 2024-12-17 flower