Bookverdict.com

Gr 3–7—Hirsch introduces the mysteries of monarch butterfly migration while encouraging readers to get involved to halt the butterfly's population decline. The author recounts how scientists developed tagging methods to track the path of eastern monarchs and to identify their wintering grounds in Mexico. After explaining the generational life cycles required to complete the yearly migratory journey, she devotes much of the book to hypotheses about why their numbers have dropped dramatically. Among them are r...Log In or Sign Up to Read More

Some methods of studying monarch butterfly migrations--such as tagging and measuring resting colonies--show that populations are decreasing, and Hirsch investi...Log In or Sign Up to Read More

Some methods of studying monarch butterfly migrations--such as tagging and measuring resting colonies--show that populations are decreasing, and Hirsch investigate...Log In or Sign Up to Read More