From the blog Live Pterosaurs in America, the post “Flying Creature in Los Angeles” says:

Flying only about 300 feet above the heads of two astonished humans . . . the creature appeared to have a wingspan of 10-20 feet. Also astonishing was the faint glow that led one of the eyewitnesses to connect the creature with the ropen of Papua New Guinea.

The sighting was in the San Fernando Valley of Los Angeles County, in 2009. The two eyewitnesses seemed to be credible.