Back to News Update | Teacher Guide Journal Section: Monarch Butterflies Overwintering in Mexico
Why is spring migration a race against time?

Millions of monarchs are about to take to the sky and begin their journey north. The butterflies are leaving Mexico in response to the changing seasons. Why are monarchs in a race against time as they begin their spring migration?

  • Name two reasons why monarchs need to leave Mexico quickly in the spring.
  • Name two reasons why the butterflies should not come north too quickly.