Birds on deck

I have no problem sharing the boat with a few birds, but tonight is getting ridiculous, the seagulls are walking around as if they belong here and the number of them has increased. I am afraid I will wake up with one by my side. They just seemed too fearless and ruthless, they leave waste behind. I just walked outside and send one away, but as soon as I turned my back she is back. Are seagulls good for any meal? I don’t really mean it my vegan friends. Now I see one staring at me from a hatch with a fish in her mouth, does she sees me as a threat or she is just challenging me?.