It's the 17 year swarm of cicadas and it's been happening in our front yard. Walking outside is like walking through a lumber yard in high production. Their exoskeletons are everywhere. Luckily, the dogs think they taste icky.

"This spring is special because Magicicada Brood X will be emerging after waiting underground for 17 years. Magicicada are a specific Genus of cicada, also known as a Periodical Cicada."
-Dan Century, Cicada Mania

Want to learn more? Go to: The Entomological Society of America or Cicada Mania