From mid-October through February each year, the butterflies sleep in the coastal eucalyptus groves. Visitors watch the trees like a crowd of expectant theatre-goers. Basketball-sized clusters of what at first appear to be brown leaves start to rustle and stir. The air fills with orange and black wings, and a monarch butterfly parade begins.
These tiny creatures are beginning a migration that would leave stronger animals, and most humans, exhausted. Every fall, the monarch butterfly begins a journey that will take it some 1,800 miles (2,900 km) and through four generations before they return to where they started.
The first generation begins their migration by flying to wintering locations along the California coast. There they cluster in eucalyptus groves along the coast and mate in late January, then they leave for their spring migration by March.
They lay their eggs inland on milkweed plants in the Sierra Nevada foothills and then they die. The second generation hatches and flies across the mountains into Oregon, Nevada or Arizona. The third and fourth monarch butterfly generations fan out even further and then they return to California, to the place where their great great grandparents started.
Monarch Butterfly-Watching Spots in California
Winter Sites (from north to south):- Fremont, Ardenwood Historic Farm, in the North Woods between the railroad tracks and the northern fence boundary.
- Santa Cruz, Natural Bridges State Beach, a site accessible to everyone
- Pacific Grove Monarch Grove Sanctuary, monarch butterfly grove near Monterey
- Andrew Molera State Park, Big Sur, through the Environmental Campground to Cooper's Cabin
- Morro Bay State Park, typically around campsite #116
- Pismo Beach, Pismo State Beach, at the south end of the North Beach Campground
- Ventura, Camino Real Park
- Malibu, Point Mugu State Park, Big Sycamore Canyon (an autumn site)
- Long Beach, El Dorado Nature Center
- Encinitas, Monarch Butterfly House at 450 Ocean View Avenue (800) 606-6627
- San Diego, UCSD(La Jolla Shores Dr at Azul St)
