One of my housemates came upstairs to chat a bit and suddenly she's like urm, there's a pigeon on your windowsill, and a pigeon had indeed comfortably installed itself on my curtains - they still need to be cut and sown, they're way too long. When I shoo'ed the bird away, I found out it had pooped on my (white!) curtains apparantly already a while ago, because I couldn't get it out anymore
