Grass Wood, near Grassington in North Yorkshire is an area of ash woodland with an under-storey of hazel and bird-cherry. Yesterday morning I had chance for a brief foray into the wood and on the south-east facing part of a sycamore trunk I noticed a patch of lichens. Closer examination of the lichen revealed a couple of resting micro-moths that I recognised as belonging to the Phyllonorycter genus. These could well be examples of "Nut Leaf Blister Moth" (Phyllonorycter coryli). There are actually two of them on the lower photograph here, demonstrating their camouflage!