Although no one had ever followed North American monarch butterflies on their annual southward journey to Mexico and California, in the 1990s there were well-ac

“What a wonderful idea for an adventure! Absolutely inspired, timely, and important.” —Alistair Humphreys, National Geographic Adventurer of the Year and

With his lifelong fascination with butterflies, America's best-known lepidopterist set himself an irresistible challenge: how many of the 800 species of butterf

An imaginative little girl discovers two caterpillar eggs on a milkweed pod in the garden and follows the eggs' development from egg through caterpillar, chrysa

Synthesizes current scientific knowledge on the life cycle, behavior, spectacular migration, and conservation of this charismatic insect.