Here are 2 of the 5 Common Nighthawks I spotted flying along the Arkansas River corridor, apparently migrating. There could have been additional birds flying earlier than the 5 I spotted. Last year I saw about a dozen migrating Common Nighthawks on Aug 19 and on Aug 5 a similarly large flock also flying along the Arkansas River corridor. Fortunately as they slowly make their way downstream they take detours to chase insects on which to feed. SeEtta