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during spring to summer
Monarch butterflies travel south to Mexico in the winter, then back north in the summer.
In the warm northern regions of North America.
In the spring and summer.
every early fall
There are many types of butterflies that can be found in fields. They include Monarch butterflies, Painted Lady butterfly, Red Admiral butterfly, Summer Azure butterfly, and the Tiger Swallowtail butterfly.
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It is generational. The butterflies that start the migration at the end of summer/beginning of fall are several generations removed from the ones the come back in the spring.
The Lifespan of a Monarch Butterfly born in the summer is 6 to 8 weeks