Every year, some animals travel from the north to the south, then back again. They walk, fly, and swim. Some travel just a few miles, and others travel halfway around the world. Why do these animals make these trips? Read this book to find out.
Every year, some animals travel from the north to the south, then back again. They walk, fly, and swim. Some travel just a few miles, and others travel halfway around the world. Why do these animals make these trips? Read this book to find out.