Some nests were blown out of a neighbours tree, in strong winds, a few weeks ago.
(I expect more will come down in these gales)
We saw caterpillars climbing up the wall of house.
Have only seen them on the ground before.
A few days later a kitten was really poorly, after being near caterpillars. It was in the vets, being treated for a few days, but luckily it's o.k. now.