One morning on the banks of the River Murray, a pair of Regent Parrots emerge from their nest - a hollow high up in a River Red Gum tree. Looking around they notice that their tree, and other nearby River Red Gums look sick. They set out to visit their friends, and to find out what is wrong. Do Frog, Yabbie, Possum, Catfish, Python & Owl have the answer? (Source: Back cover)