Birch Polypore

As its name suggests these large bracket fungi are found on Birch trees, usually dead but sometimes (as in this case) on living ones. They are quite easily identifiable as they are large saucer like fungi with a pale brown crust that tends to form a 'lip' around the edge of each fungi. these ones were around 15cm each and although growing individually there were several on the one tree which was in a part of the woodlands that was still very boggy.