his story isn't just about birds. It's about secrets, the seaside, how seagulls can trick worms into thinking it's raining.

It's about mucus, fudge and dogs needing a wide variety of sniffs.

But if you want the simple version, it's about what happened here last summer. How a girl called Ivy and a boy called Nathaniel solved a mystery and saved the world's animals: one at a time ...