They are for a moth, unfortunately, they are some kind of spinx catepillar, I can't find the FB article that told exactly about them BUT they are moving looking for soft ground (fields) so they can burrow down, make their crysillas (sp) and then blossom to a moth later. We're already getting some of those yellow butterflies here.I hope they turn out to be the yellow butterfies. I was thinking that they were going to be those big brown moths. Those are terrible at night, and are drawn to light. You can't even open your door at night to let fresh air in if it's cool enough with those thing's around!