AustLit

'The beautiful waterfall frogs of Cascade Creek have suddenly disappeared and Ruthie’s parents have been asked to help solve the mystery. So now it’s all aboard the big green bus, pet wombat and all, for a wildlife adventure in the rainforests of northern Australia.

'Join ten-year-old Ruthie as she and her wildlife scientist parents, Tom and Kate, track down why the frogs have vanished from their home. Together with Ruthie's younger brother Liam and sister Bel, and with a little help from the mischievous wombat, Womble, they are soon discovering clues to the puzzle.' (Publication summary)

'When Ruthie and her family rescue an orphan wombat, Ruthie learns how wild wombats are suffering from a terrible disease. Knowing that her own much loved pet wombat, Womble, might be infected one day, Ruthie wants to help. Will Ruthie find a way to save these amazing animals? ' (Publication summary)

'Ruthie’s wildlife scientist parents are taking on a new challenge – saving the endangered red-tailed black-cockatoo. For Ruthie this means a lot of exciting firsts: living in a house, and not a bus, starting at a ‘real’ school, and the chance to make some friends. As always, Ruthie will be helping her parents with their work, but will it be enough to make a difference for these rare and beautiful birds? And what will Ruthie and her family find themselves up against this time?'

Source: Publisher's blurb.