Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
4.6
Points
5.0
Fiction/Nonfiction
Fiction
Word Count
36812
Points per Word
0.000136
Description
30,000 years ago, before the pyramids are built, before the Ice Age comes and goes, and before Neanderthals become extinct, the Yam tribe live in peace on Bird Island. But the Crocodile tribe have other ideas.