Small Bird, Often Reproduced in Clocks
Puzzle 17 of Countdown to 2020 Piece of Cake Pack
Question is: Small Bird, Often Reproduced in Clocks
and the answer is: CUCKOO
Word Meaning:
CUCKOO — Any of various birds, of the family Cuculidae within the order Cuculiformes, famous for laying its eggs in the nests of other species; but especially a common cuckoo (Cuculus canorus), that has a characteristic two-note call.
Definitions from Wiktionary.