The Monarch Effect: Surviving Poison, Predators, and People

Gr 5 Up–It was as recently as 1975 that the overwintering site for millions of eastern monarch butterflies was discovered in Michoacán, Mexico. Initially credited to Canadian zoologist Fred Urquhart and his wife Norah, the breakthrough was actually made by an Indigenous Mexican naturalist, Carolina Trail (then Aguado), and her American husband, working for Urquhart. Church traces the intrigue among scientists racing to study the migration while keeping the site secret, as well as subsequent studies over decades examining how the insects know where and when to go, how they find milkweed for their caterpillars to eat, and much more. Later chapters outline challenges to conservation of the endangered butterflies and their fragile ecosystem. The tone of the writing is colloquial, with judgments like “really cool” or “super interesting.” An author’s note includes many suggestions of resources for learning more about the topic, recommendations for becoming involved by tracking and monitoring, and other citizen science initiatives. The volume concludes with a lengthy glossary and very extensive list of references, including books, magazine and newspaper articles, websites, and interviews, much of which will be inaccessible to the book’s target audience. However, there are no individual source notes or citations. Photos and other illustrations complement the text throughout.