Calyw

I've just returned from holiday in the Cairngorms in Scotland. I saw a huge number of Silver Birch covered in webs, many of which contained young caterpillars, the trees were completely stripped and many were dead. When I commented on it to one of the locals, I was told that the infestation extends for several miles along the mountain and up through Glenlivet and that the matter had been brought to the attention of the local council but no action has been taken.