Journey North uses volunteer-submitted data to track the migration. On Monday, the state’s first sighting was recorded in ...

Following a migration that started in Mexico, monarch butterflies have reached Michigan. Here's where they've been spotted.

Journey North uses volunteer-submitted data to track the migration. They were recently spotted near Toledo, just south of the ...

which tracks monarch butterflies, announced on April 16. Journey North's monarch migration map shows the closest sighting to Michigan was in Warrenville, Illinois, on April 6. Two more sightings were ...

After flying some 3,000 miles from the northern U.S. and Canada to a remote forest in Central Mexico for the winter, tens of millions of monarch butterflies are making their way back north.

Monarch butterflies are making their flight north after wintering in Mexico. Here's what to know about the fascinating, ...

The butterflies ... Thus they drew a map that traced the insects’ origins and movements. A male, right, attempts to mate with a female. The monarch population in Mexico varies year to year.

Climate change and industrial agriculture have decimated the western monarch butterfly’s crucial food source, threatening the ...

This week on 60 Minutes, correspondent Anderson Cooper reports on the migration of the monarch butterflies, an annual spectacle during which millions of butterflies begin their trek north from ...

As once-continuous prairies have been fragmented by development, cities are now critical waystations in the monarch’s cross-continental migration. Yet, few cities actively appreciate or plan for ...