"Be careful walking by the open air monkey enclosures, because poop isn’t the only thing they’ll fling at you. It’s like that scene from Silence of the Lambs, when Clarice is going to see Hannibal Lecter…you know the scene I mean. Only much, much worse."
Funkotastic
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.