It’s been a unique fall in Delaware – cool, warm, rainy and then, downright warm again: perfect conditions for one last Chironomid swarm of the season at the Prime Hook National Wildlife Refuge.

It’s time for the monthly “what the heck is that?” site. Chironomids are, if the image on the opening page is any indication, a bizarre looking group of insects. Known as the midges, Chironomids are ...