Thursday, September 6, 2012

Monarch Migration Has Started


This butterfly is fairly common in Wisconsin. I wonder if THIS one that I photographed along the road was ready to start its Fall Migration.



In the fall, monarchs head south. With a northerly wind, the monarchs will migrate at high altitudes, taking advantage of the tailwind. This helps them conserve their energy. As they travel, hundreds or even thousands may gather together at their nightly roosting spots.

A Milkweed Pod--there is alot of milkweed along the road
Midwestern monarchs continue south all the way to the Sierra Madres of middle Mexico, where they spend the winter among fir forests at high altitudes. Winter monarch butterflies are kind of sluggish. On warm days they head out to look for nectar, but they don't reproduce. In spring they head north, breed along the way, and then die. Their offspring will return to the northern starting point, where they lay their eggs on milkweed plants.

Here is their route...














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