Adaptations
Caterpillars store defensive compounds obtained from milkweed, and bright adult coloration warns many predators. Broad wings support soaring and gliding during migration, reducing the energy needed for continuous flapping.
Behavior and daily life
Adults orient using the sun and an internal time-compensation system during migration. Migrating monarchs gather at stopover sites and form dense winter clusters in particular forest regions.
Conservation
Current profile labelVulnerable
Loss of milkweed and nectar plants, herbicide use, drought, severe weather, climate change, and degradation of wintering forests affect migratory populations. Planting regionally appropriate native habitat can support multiple life stages.
The long migration of eastern North American monarchs is completed across several generations rather than by one butterfly making the full round trip.