The Caspian Tern is the largest tern in the world, yet I almost missed the one pictured above that was standing in the middle of a field yesterday at the Bald Knob National Wildlife Refuge. Caspian Terns migrate through Arkansas yet sighting don’t happen every day. eBird reports they are “widespread but typically uncommon.” According to AllAboutBirds.org, the species is listed as endangered, threatened or special concern in several U.S. states. Partners in Flight estimates a global breeding population of 530,000 and rates the species a 10 out of 20 on the Continental Concern Score, indicating a species of low conservation concern. In Arkansas, eBird has 710 reports of Caspian Tern sightings over the years.