I am overwelmed with fuzzy black caterpillars!!!! They are black with a yellow (green?) line on them. They are building web looking nests in my trees. Those webs are dense and white and covered in more caterpillers and full of little black spots. The chickens won't touch the darn things. What are they are are they taking over the world? How do I get rid of them before they hatch into freaky mutant flying things. UGG!!!