Auzou Book for Elya and her tribe tome 1 the terror birds

Léo is a small prehistoric beast. He has two passions: hunting mammoths and Elia, his little mistress. When Elia's family decides to migrate south, Léo feels a bit worried: what will this new territory look like without snow and without mammoths? The two friends will quickly discover that they are not welcome: a gang of fearsome birds is in charge and is determined to chase them away.