What do you do with a neighbor that feeds seagulls The gulls are soiling the houses and boats next door?

You could start by having a friendly conversation with your neighbor about the issue, expressing your concerns about the mess caused by the seagulls. Suggest alternative ways to enjoy wildlife without feeding them, as it can lead to more problems. If the situation doesn’t improve, consider contacting your local animal control or community services for guidance on how to address the issue more formally.