New research strengthens the interpretation that the more mysterious lights flying around southwest Texas (and called "Marfa Lights" although other lights have been so called) are made by glowing predators that fly near Marfa. Here are some sources giving details.
Marfa Lights in Texas
Marfa Lights in Texas
The cryptozoological possibility seems weird, but there are similarities with the ropen lights of Papua New Guinea, and there the lights are said to be nocturnal flying creatures described like giant Rhamphorhynchoid pterosaurs: long-tailed ropens.Marfa Ghost Lights, Creatures of Habit
How are nocturnal Marfa Lights (in particular the CE mystery lights described by James Bunnell in his book Hunting Marfa Lights) like creatures of habit? In the limited area where Bunnell’s cameras record them, they usually remain absent for many weeks, sometimes many months, before returning. If one or more of the cameras records them on a Monday, for example, they will not be seen on the following Thursday or Friday or Saturday or Sunday . . . But the exceptions, those nights in which they do not stay away for many days or weeks or months, are astonishing, for sometimes the cameras record them on successive nights, and sometimes at about the same time of night.Intelligent Marfa Lights
Hiking in this part of Texas, a college professor got lost late one afternoon. Being lightly dressed, he realized the danger of being stranded in the cold high desert at night. Soon after sunset, he saw a light, and assuming it was a ranch light, followed it for awhile, until he found that it had led him back to his truck. Then the light went out.A Scientific Look at Marfa Lights
To be brief, the group of bioluminescent predators probably had a successful hunt on the night of July 14th, so they left their sleeping quarters (perhaps a cave) at the same time on July 15th, soon after sunset, and flew to the same general area where they had success the previous night. Fortunately Bunnell’s camera recorded the activity on both those nights.Marfa Lights - Pterosaur Connection
According to Jonathan Whitcomb, a cryptozoology author in Long Beach, California, when one of the bioluminescent predators has been glowing for awhile, not far above the ground, it will be joined by another of its kind, which will then turn on its own glow. After insects have been attracted to that area, the two creatures will separate, which appears to distant human observers to be one light splitting into two.