What does the cryptic crossword clue "Bird flying around this tram (5,3)" mean?

The definition is "Bird". The wordplay uses an anagram. anagram of THIS + TRAM = MARSHTIT; definition: "Bird" The answer is MARSHTIT.

Bird flying around this tram (5,3)

Daily Mail Cryptic #17668 | 1 Across | 2025-07-23 flower