Mine speaks Volant. It's labeled as a pet and under the name says "Logarth's pet gorg?" I thought it odd that there is a question mark on that. Perhaps there is more to this little guy.
This spell is received as a reward for the Basilisk teeth collectors quest. When you cast the spell you receive a pet Gorg (looks like a baby eagle) that follows you around. He speaks "Thalen" so good idea to learn the language if you can!