The Wild Kratts take off in this Step into Reading book about wild creatures that fly! PBS's successful animated show Wild Kratts joins the adventures of zoologists Chris and Martin Kratt as they travel to animal habitats around the globe. Along the way, they encounter incredible creatures while combining science education with fun. Boys and girls 4 to 6 can learn all about birds, bats, and other amazing creatures that fly in this leveled reader! Step 2 readers use basic vocabulary and short sentences to tell simple stories for beginning readers who recognize familiar words and can sound out new words with help.