Monarch butterflies on tree trunk, Danaus plexippus, Michoacan, Mexico. Monarch butterflies hibernate at the oyamel forest in Piedra Herrada sanctuary in Temascaltepec, Mexico. Monarch butterflies every year return to these temperate woods.
Reserva Mariposa Monarca in Reserva Mariposa Monarca
Monarchs in Their Millions (Mexico). Canopies of golden-orange butterflies cover the forests and hillsides in the Reserva Mariposa Monarca (Monarch Butterfly Reserve), perhaps Mexico’s most astonishing yearly natural phenomenon. – November to March.
Have Friends, Will Travel: 10 Amazing Animal Migrations