A new scheme to cut the number of gulls across Gloucester by placing plastic eggs in nests to fool the birds, is being introduced across the city.
The council is targeting the herring and lesser black backed gulls
A trial by the city council found the birds stayed quiet for weeks sitting on the dummy eggs and did not lay more.
Previously real eggs were oiled which stopped them from hatching and kept the birds sitting on the nests for longer.
The plastic eggs proved more successful than the oiled real ones because they do not decay over time.
The latest pilot was tested on 17 nests this summer.
The council is targeting the herring and lesser black backed gulls who make their homes on the rooftops in and around the city.
Councillor Andrew Lewis said: "We are leading the country in our efforts to find ways to deal with this issue and now these plastic eggs are proving to be a very useful addition to the armoury."