What is in my hair!?

Me and my husband were going on a bus tour from London out in the countryside and we were a bit early so we went into the train station just to look around while we were waiting as the bus stop was outside the train station. Just when we walked in I felt something in my hair and I looked at my husband and he had something green on the jackets shoulder and I touched my hair and I had something wet and slimy on my head and hair. It was brown, green and white. It was pigeon poo and a lot of it! Just my luck! We found an information desk and asked it there were somewhere I could clean my hair. They were so kind and opened up some showers for me so I could at least try to get some of it out my hair. It was not so pleasant to walk around with still some bird poo in my hair when we entered the bus for the full day bus tour. I can tell you that walking around with dried bird poo all day in your hair smells funny and it not something I REALLY would not like to do again.