The monarch butterflies are headed south. I sat on the edge of my garden last week and, in only thirty minutes, I counted 300 fluttering above the zinnias. The generation that is wafting south is not the generation that flew north. In fact there are three generations in between. Somehow the fourth generation knows at the end of August to turn around and start the trip south to the Sierra Madre Mountains in Mexico. This generation is the only one to make the entire trip and will fly up to 3,000 miles home. My classroom full of sixth graders sat outside yesterday to watch and count. The students were unusually subdued, pointing quietly as bits of orange and black fluttered by. I saw wonder in their faces. Our official count was 61 monarchs in ten minutes which we posted on http://www.journeynorth.org/ .