David Gullan 
Life in a Hollow 

Who is home in the hollow?Tree hollows are very special places that provide animals, both big and small, with a space to nest and feel safe.Explore life in a tree hollow in the Australian bush and meet the native creatures who come to call a hollow a home. You ll be surprised just how many choose to move in!You ll also discover the important role tree hollows play in the environment and how we can help protect them. Reading level varies from child to child, but we recommend this book for ages 5 to 9.