Les animaux du bois de Quat'Sous, book 7: In the Path of the StormColin Dann1991

The death of the Great Stag, leader of the deer of White Deer Park, leaves its inhabitants at the mercy of his successor Trey, a strong and fearsome stag who believes there is no room for the smaller animals in the nature reserve. Meanwhile, Tawny Owl grows tired of bachelorhood and leaves the park in search of a mate.