It is thought the bronze cockerel, which is 12.5cm high, could have been a message to the gods.
Archaeologist Neil Holbrook said it was a “most spectacular” find.
The elaborately-decorated cockerel is believed to be Roman, probably dating back to the 2nd Century AD.
According to experts, religious significance was given to the cockerel by the Romans and the artistic subject is known to be connected with Mercury, the messenger to the gods.
Story: BBC News | Photo: Cotswold Archeology