Yes, I have experienced the cunning of the Sidmouth herring gulls at firsthand (pun intended).
Sitting on a bench with prawn sandwich in my right hand, I suddenly felt a big “boomph “ at the back of my right shoulder, which caused my sandwich to fly out of my hand and land on the pavement, where the gull polished it off.

Butin other areas you may find fulmars, who, if they don’t like you, may spit their oil at you. If you get any of this stinking stuff on your clothes, you might as well throw them away, as you’ll never get rid of the smell!