The latest in Nobrow's acclaimed series following the magical adventures of Hilda, the diminutive blue-haired heroine. Hilda and her mother have finally laid roots down in their new home in Trolberg. Today revellers flood the streets in spectacular feathered costumes to celebrate the annual Bird Parade. And Hilda, ever the adventurer, wants a peek behind the scenes. Hilda rescues an injured raven, but her new ward is no ordinary bird...it has the ability to shift in form. What's the meaning of it all? Will the secret truth be revealed at the bird parade?