Police say they are increasing patrols in Dorchester as the issue is discussed at a council meeting.
Police said more than 20 dead birds were found in the Mill Stream and River Frome areaA group of teenagers have used catapults to kill more than 20 birds in recent weeks, a council meeting heard.
Ducks have been fatally injured on the River Frome in Dorchester, Dorset, and seagulls have been targeted in the town's Brewery Square. The group was also seen luring birds with bread into the path of oncoming cars, Dorchester Town Council was told.The teenage boys are also believed to have used the catapults to smash floodlights at the town's rugby club.Mayor Alistair Chisholm said he was appalled to hear about the behaviour of school-age children across the town but said plans were under way for additional CCTV cameras which might, in time, act as a deterrent.