Last week when I was coming home from Virginia I was driving on Route 729. It was a short cut while on Rt 522. It cut out a few miles. I saw these blue triangle boxes hanging from the trees along the way. They were spaced randomly along the road.
It looked like a big fly catcher. I think they were doing it to get a survey of the bugs in that area. If anybody know differently let me know. it was one of those “what is it “ moment.