With the joy of birding comes the fear of getting dropped on. Recently, my seven-year-old daughter carefully watched a pair of Canada geese sitting on an old ponderosa pine snag. She was looking for an owl’s nest below, turned to me and wondered: “Why is bird poop white?” Wanting to make this a memorable homeschool experience during our pandemic times, I found fascinating answers and unearthed a recent, surprising revolution in the world of bird poop research.