When I worked at McDonald's, I begged our manager to agree to get a "Do Not Feed Animals" sign. He agreed, then took a corporate position in Lansing. The new manager just laughed when I suggested it.
Why??
Customers would often buy fries to feed the sea gulls that swarmed around our store (only a few miles from Lake Huron) and as a result, these gulls would get EXTREMELY aggressive toward people. Three employees were attacked and I got into the habit of carrying a broom with me if I had to go out to the dumpster (and made the teenage girls do likewise) so I would't get pecked.
So please, do not feed sea gulls.