It's the start of autumn in Dalby and Cropton Forests. Change is in the air as the sun's power is fading. After months of warm weather, and even a false autumn, more leaves are beginning to turn a golden yellow and many of the birds are preparing for their migration south. Life among the trees might seem to be slowing down, but underneath the canopy there is a transformation taking place. It's showtime for one of the delights of autumn: fungi.