"The most dangerous/feared animal in case of an escape is not, as you may think, lions, tigers or other large carnivores. It’s the chimps. Those things will rip your arm off and beat you to death with the bloody end as soon as look at you."
ShadyElmm
You have never lived on a boat with wild birds overhead in masse, because some birds can definately choose WHEN they go. For survival they can release before flight, to gross out a predator, or mark territory/flight path. Or they can hold it near their nests to avoid attracting attention. No animal as evolved as a bird would leave pooping up to pure chance.