What does the cryptic crossword clue "Bird returning in autumn, a lot roosting (7)" mean?

The definition is "Bird". The wordplay uses a hidden word. hidden reversed in (returning in) AUTUMN A LOT ROOSTING The answer is ORTOLAN.

Bird returning in autumn, a lot roosting (7)

Times Cryptic #28865 | 25 Across | 2024-03-15 flower