monarch butterfly

Sehvilla Mann / WMUK

More than one species of butterfly has seen its numbers drop – in some cases plummet – in recent years. The monarch is doing better than some.

Brocken Inaglory, Wikicommons

Western Michigan University Biological Sciences Professor Stephen Malcolm says the population of the monarch butterfly in North America has dropped over the last 20 years. 

Ekabhishek, Wikimedia Commons

Western Michigan University Professor of Biological Sciences Stephen Malcolm is among the scientists warning that monarchs are becoming rare east of the Rocky Mountains in North America.