Chicken of the WoodsColin Miles of the Conservation Vols. sent me this picture of a Bracket fungus he found growing on a Yew tree in Llannon this morning.
When he described it as "a magnificent specimen" he wasn't exaggerating.
It is almost certainly Chicken of the Woods which is often found on Yews.
Unlike Ian's Hen of the Woods (which is a white rot fungus) this species is a brown rot fungus, although the eventual outcome for the host tree is likely to be the same for both species.