On a recent hike in North Carolina's Sauratown Mountains, I came to a viewing platform at 2,572 feet at about 2 in the afternoon on a bright, sunny day and found it covered with thousands of earwigs. The insects seemed agitated, and many of them were flying; several dozen landed on me in the space of a minute. Every reference I've consulted says that earwigs are mostly nocturnal and seldom fly. What was going on here?