The Jumbalees in the Camping Expedition

The Jumbalees set off for a night's camping in the forest but Fred has to stay behind and finish his homework. On their walk through the forest Elvis entertains them with poems. They set up camp, but just as it was getting dark and they were about to go to bed, a distant wailing sound in the night scares them. What kind of creature could it be? They set off cautiously in the dark to find out where the strange noise is coming from.