He blinked as she spoke and looked over his shoulder to see what she was talking about. "Oh.. it looks like little pits of twine.. or leather is holding them that way.." Walking over he nudged the shells till his head snapped up at the sound of a twig breaking outside. Eyes wide he looked at the filly and shushed her before she could speak again. "Something's out there..." He whispered and nodded towards the opening as he made his way to it to peek outside and see what it was.