Thursday, July 12, 2007

Monarch Butterfly



Monarch butterflies migrate as far as 4,800 kilometers.
MonarchWatch Migration and Tagging

This is a well-known fact. What isn't as well known (at least I didn't know until now) is that each year, 4 generations of Monarch Butterflies are born in their northern habitat, and only the last generation performs the migration. The life spans of the first three generations last only about 6 - 8 weeks each. The first generation is born in March/April, the second in May/June, and the third in July/August. The fourth generation is born in September/October and when the butterflies are mature, they fly south. This last generation's life span is about 6 - 8 months long. They hibernate in the south and then in February/March, they fly north again, lay their eggs and die.
Monarch Butterfly USA - Life Cycle

This butterfly is a second generation butterfly.