Loc: Stone Ridge, NY
No. Bird droppings from raptors and owls end up on the cliff at times, especially on climbs without much traffic. To wit, on my first trip up Birdland I found a fistful of owl turds on that left hand jug above the crux roof. I was grossed out but I also learned a valuable lesson about the unintended impact of convenient toprope anchors have on the upper pitches of otherwise classic routes.