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.

Red doesn't quite enjoy vampirism as much as the other Vampires. She longs to play with the other hatchlings, but they are too afraid to let her play. So she sits with the Vampires and acts their way, but she still wishes to be normal.