Butterfly populations in the US shrank by more than a fifth within the space of two decades, according to a new study.
United States disappeared between the year 2000 and 2020, according to new research featuring faculty at Binghamton University, State University of New York.
Monarch butterflies (Danaus plexippus) appear to be declining not just in North America but also in Australasia. Could this be a consequence of global change, including climate change, the ...
Colony estimates at central Mexico overwintering sites indicate that monarch butterfly (Danaus plexippus) populations have declined over the past two decades. Among the leading causes of this ...