South Bay blogger Greg Grothaus notes that the Monarch butterfly migration is beginning at Natural Bridges State Park in Santa Cruz.

The totally amazing part is that these butterflies have never been here before. Their parent’s parents have, but since the lifespan of a butterfly is so short, their annual migration spans several generations. Nobody knows how they find their way to the exact same spot every year, but they do and it is amazing to see.

I went with Melissa and her mom to see the butterflies a few years back.