dark gray concrete surface pooped by pigeons with white excrement.

asphalt flooring floor wall black sand art sidewalk lane dark gray concrete surface pooped pigeons white excrement abstract danger unpleasantness bird droppings background wallpaper poo droppings pigeon poop feces excrement fecal matter disease spread environment surface mess problem pollution condominium health risk pigeons damage disgusting disease meningitis flu texture design stink outside decoration decorative monochrome stamp retro grunge effect grungy danger prevention concrete textured art abstract wall pattern dirty rough background