A Distant World
Darklings are completely dark creatures that are attracted to the electronic radiations of old tech. Their appearance is foreshadowed by a chittering.
No one really understands what the creatures are as a specimen, alive or dead, has hitherto been studied. What is known they are drawn to the electromagnetic, and electronic fields given off by electronics. Because of this attraction the safe use of any kind of electronic technology is nearly impossible to accomplish. There are tinkerers who try to work around this by recreating the capabilities of electronic devices using clockwork, and steam power.
Most of the study of Darklings focuses around the situations that causes them to appear.