TV Guide CBeebies Thursday

The Go Jetters face their toughest mission yet: organising a birthday party for Ubercorn without him finding out! Luckily, when Glitch and Ubercorn were cadets together, they made a map of all the secret passages around the Academy. The Go Jetters can use it to avoid detection while they prepare the party. Xuli and Lars take a secret tunnel to the arts and craft room to make the decorations, while Foz, Kyan and Glitch head out into the Academy garden to gather Ubercorn's favourite flowers, cherry blossoms. But things don't go according to plan, and the Go Jetters have to hide themselves to avoid a wandering Ubercorn.

Nick and Norman are identifying the birds singing in the forest and hear a strange sound. It's their broken cuckoo clock. Can the birds help them fix it by finding the missing key?

Holly wants to know all there is to know about wriggly earthworms! Ferne visits a worm farm and meets worm expert Ken, and they handle different species of UK worms. Meanwhile, Rory and his son Sandy search the compost bin and the garden for worms and decide to build a wormery to make worm tea! Plus, we find out why earthworms are so important to the planet by being amazing soil engineers.

Toad needs a new pumpkin double bass. Yukee and Twinkle use vegetables from the veggie patch to create some surprising instruments - but none are quite right for Toad. Can some new pumpkins be found, or will Toad be leaving music behind forever?

The Piris are convinced a seal colony is planning to take over the berg, so they infiltrate the seal group to gather evidence. But as panic spreads, are their suspicions justified?