Well, the chick grew up into a chicken, but you’re still not sure how the egg got into that cave...

Nobody's Echo is one of the stranger inhabitants of the cave. When she was first brought into the cave, others wondered whether she may be a pygmy dragon because of her egg's small size, but when the egg hatched they were proven wrong. She wasn't a dragon at all, but a chicken. The dragons were surprised, but the chick soon made friends with Immortal Foundling, a frozen hatchling. They allowed the chicken to stay as a companion for Immortal Foundling. When the chick grew up, it started sitting on and warming the dragon's eggs. That became her job. Nobody's Echo spends a good portion of her day sitting on the eggs, which can be a funny sight considering they are usually larger then her. When she is not egg warming, she follows Immortal Foundling around. Nobody's Echo is still Immortal Foundling's friend even though she has now matured.