Officers are appealing for witnesses after a nesting swan had sticks and rocks thrown at it in Cirencester on Sunday evening.
Police received a report that a group of teenagers had been seen attacking a large nesting swan on the pond in the Abbey Grounds in the early evening.
The swan was not believed to have been injured and a member of the public disturbed the group of teenagers.
The group are described as including both boys and girls, all white and aged around 14 to 15 years old.
If you witnessed this incident or have any information about it please contact police on 101 quoting incident number 114 of June 29.