As we head into August and September, we will experience the peak of Utah's monarch presence.  Two to three generations have been born here during the summer, and this is when we have the most monarchs in Utah. 

The generation that is born in late August or September will instinctively know that they are the migrating generation. They know this from the change in temperature, hours of daylight, and angle of the sun. They put reproduction on hold, saving their energy instead for fueling up to fly the hundreds (or thousands) of miles to reach their overwintering destinations:  along the California coast, or down into central Mexico.