¡Bienvenidos monarcas! Welcome monarchs!
The long journey south is coming to a close, as millions of monarchs reach the winter sanctuaries in Mexico. People point to the sky as they welcome the butterflies. "¡Bienvenidos monarcas!" they say in Mexico. How will you celebrate this wondrous event? Imagine the stories the butterflies in this picture could tell. Each began life as a tiny egg. Think of the challenges they've overcome and the distances they've traveled!

Image: Felipe Martinez, Reserva Biosfera de la Mariposa Monarca (RBMM)