The boggy end of our small pond is full of damp moss. The birds love it! They come and pull away strands of growth, I think it is being used for nest building.
Tree peonies are very special to me as they were one of my father's favourite flowers. His garden was protected by a high wall so his plants grew into large bushes whereas mine tend to get cut back by the wind and never achieve any size. I shall have to think of relocating them to somewhere more sheltered.