Blame Landfill, Not the Seagulls
In Gloucester (UK), like many other places, there is a battle against the increase in Seagull population and the resultant nuisance and pollution.
I originally come from a seaside town (South Shields) and love Seagulls, they are graceful, beautiful, birds and are only infesting our towns and cities because WE throw away so much rubbish, including food.
McDonalds, Burger King, KFC food containers can be seen strewn across the length and breadth of the UK, is it any wonder the Seagulls come to the towns when there is so much food available? It's a lot easier than diving into a cold sea to catch enough fish to survive!
We also provide excellent nesting habitat with tall buildings that have ledges galore simulating their natural nesting environment.
This photograph (poor quality due to zooming and being hand held) is on top of buildings backing onto a cemetery where I go to tend my Father-in-Law and Sister-in-Law's graves.
Leave the Seagulls alone, Stop throwing litter and food on the ground, recycle your domestic food (in Gloucester they collect food waste weekly and process it into fertiliser) and the Seagull population will decrease and find their own level for survival.