A team of University of Washington researchers has figured out how monarch butterflies’ brains use the location of the sun and time of day to know where to go.
The butterflies can migrate up to 3,000 miles to avoid the winter cold. That’s much farther than any other butterflies travel, and almost as far as birds or whales. But unlike birds or whales, they only make this trip once in their lives. In the fall, the butterflies’ compass points them southwest. In the spring, it switches direction.
The study was published in the journal ‘cell reports.’ For more information check out the project’s blog.