This hatchling appears to be... dead?

Perhaps not. It seems to be active during the night.

Young dragons are relatively defenseless. They are born with relatively soft scales, which are shed and replaced with harder ones as the hatchling matures. Once a hatchling’s wings grow in, it typically marks the beginning of maturation. At this point they are often capable of hunting on their own and are usually left alone by their mother.

LateNightPromise is a Vampire Dragon hatchling. When her egg was bitten, her parents didn't turn her out. They still cared for her as their own daughter—even if she no longer looks like them and can only be around them at night. Her mother, AmethystPromise, spends most nights just talking with LateNightPromise or doing something safe and fun for both of them. LateNightPromise might be cold and drink blood, but her mother still loves her.