The memory I have ingrained most from the game is that once I hatched a norn that for whatever reason, could not walk. It just stayed where it hatched unless another creature moved them. I feared it would starve to death, but the other norns took care of her. They brought her food and liquid, they played with her, they taught her language, they even protected her from the Grendel. This wasn't necessarily pre-programmed behavior; this never happened at any other time for me. They usually didn't teach each other much, and they certainly never brought each other food or gifts. Just for the one that was unable to take care of itself.