Evelyn Cheesman, a British biologist well-respected for her discoveries of new species in the southwest Pacific, early in the twentieth century, also discovered a strange flying light deep in the mainland of New Guinea, north of the area where Paul Nation videotaped indava lights seven decades later. In recent years, both lights have been suggested to be from the bioluminescence of ropen-like flying creatures that some investigators believe are living pterosaurs.
The lights observed and analyzed by Cheesman were, according to her conclusion, not from any human origin. This reminds me of investigations of Marfa Lights of Texas, where investigators like James Bunnell, Edson Hendricks, and others are convinced some strange lights are not from any car headlights.
The Marfa Lights, in their duration (sometimes remaining on for many minutes) perhaps resemble the indava lights more than the brief Cheesman lights, which remain on for only a few seconds, like the ropen lights of Umboi Island, Papua New Guinea. Unlike the ropen lights, Cheesman lights and indava lights and Marfa Lights are often seen as a group.
Some people might ask how unidentified flying lights connect with living pterosaurs. They connect in three ways. The more-direct way is that pterosaurs or pterosaur-like flying creatures are sometimes seen to glow. A recent example is from a lady who was on a cruise in the Caribbean, with family members. Her daughter brought her onto the deck one night, anxious for her to see what was flying over the sea. The mother, who had not been drinking, saw two apparent pterosaurs, glowing and flying back and forth, sometimes closer to the ship. Other examples are found from the writings of explorers, like Paul Nation, Jonathan Whitcomb, Garth Guessman, and David Woetzel, who interviewed eyewitnesses in Papua New Guinea.
The less-direct way that strange flying lights connect with living pterosaurs is that they are seen in some of the same areas. Marfa Lights are in southwest Texas, and reports of living pterosaurs come from Texas. The least-direct connection is that no large flying creature classified by modern biology is recognized by biologists to be bioluminescent. Some cryptozoologists believe living pterosaurs are bioluminescent. That third connection is tenuous, to be sure, but there it is.