I've never seen so many fall caterpillars.
Walking through the forests here, it is so noisy from caterpillar droppings falling that I cannot isolate the squirrels feeding in tall pecan trees.
Normally it is dead silent in the monrings and late evenings this time of year except for the sounds of sqirrels chewing through pecan shells and dropping the remains down to the ground. I can hear them from 50 yards in any direction. This year there are so many wlanut caterpillars and others that it is a neverending sound of droppings cascading down from hundreds of colonies with 50 to 100 caterpillars each on all kinds of trees.
I have never seen anything close to these numbers. The only pest we didn't have this fall was fall webworms.