Before the Ancient City was abandoned some of the citizens had various pets, one of which was a species of bats which was loyal and obedient to it's owner. After the Ancient City was left empty the pet bats and other pets scattered across the island of Okoto evolving according to their new environment. Most of the bats settled in the higher caves of the mountains, and to match the terrain their colors altered for a more fitting camouflage.
This little was originally inspired by a character from one of the Transformers RID episodes, called NightStrike. But I also wanted to make a smaller MOC so I kept the size roughly around the same as the Silverbeak Buzzard. I tried my best to give the creation accurate batwings as much as possible, and I think it came out nicely, it's not perfect true, but it works just fine.