Dear Kitty. Some blog

This June 2014 video is called Monarch butterflies amazing migration to Mexico.

From Emory Health Sciences in the USA:

Butterfly genomics: Monarchs migrate and fly differently, but meet up and mate

A genome-wide comparison of eastern and western monarchs

July 29, 2020

Each year, millions of monarch butterflies migrate across eastern North America to fly from as far north as the U.S.-Canadian border to overwinter in central Mexico — covering as much as 3,000 miles. Meanwhile, on the other side of the Rocky Mountains, western monarchs generally fly 300 miles down to the Pacific Coast to spend the winter in California. It was long believed that the eastern and western monarchs were genetically distinct populations.

A new study, however, confirms that while the eastern and western butterflies fly differently, they are genetically the same. The journal Molecular Ecology published the findings, led by evolutionary biologists at Emory University.

“It…

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