The great annual movements of fall include monarch butterflies winging toward Mexico, whales heading to the Caribbean to give birth, and multitudes of birds in the autumn skies. There’s another migration this season that often goes unnoticed by casual observers: that of dragonflies. Given that dragonflies (or something closely resembling them) have been on this planet for more than 300 million years, there’s even a chance they’re the original migratory animals!
