This week, I accompanied the driver of one of loads to see what it is like when thousands of herring gulls descend on you looking for lunch. I think Alfred Hitchcock must have experienced something like this when he wrote “The Birds”.
The gulls recognize the truck so they are already dropping out of the sky like little dive bombers when you get to the drop site. It’s noisy and loud. They just keep coming until the sky if filled with birds for as far as you can see and then they quickly dig in.