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.

"Monarch butterflies are of the most recognizable and beloved butterfly in North and ... and can be viewed on its interactive map. You may help track the migration by reporting sightings and ...

For our new study, we reviewed the literature on the movements of marine migratory species from 1990 to 2017. We synthesised ...