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The letter said, "Plummeting from a high of 1.1 billion monarch butterflies overwintering in central Mexico´s high-altitude oyamel fir forests in 1996 to a pitiful 33 million thinly scattered over seven sites during the current 2013–2014 season, the extraordinary monarch butterfly migratory phenomenon is now officially endangered.
Discovering wintering site of monarch butterflies Catalina Trail (née Aguado , previously known as Cathy Brugger ) is a Mexican-born naturalist and social worker. She is noted for discovering, with her then-husband Kenneth C. Brugger , the location of the overwintering sites of the monarch butterfly , Danaus plexippus .
Monarch butterfly migration is the phenomenon, mainly across North America, where the subspecies Danaus plexippus plexippus migrates each autumn to overwintering sites on the West Coast of California or mountainous sites in Central Mexico. Other populations from around the world perform minor migrations or none at all.
A new report shows a sharp decline in monarch butterflies migrating to Mexico as well as a loss of habitat in the forests they spend their winter each year.
The number of monarch butterflies at their wintering areas in Mexico dropped by 59% this year to the second lowest level since record keeping began, experts said Wednesday, blaming heat, drought ...
A monarch butterfly feeding on milkweed. (Shutterstock) The U.S. Fish and Wildlife Service is pushing for added protections for the monarch butterfly after seeing a population decline of about 80%.
The Volcanic Belt pine–oak forests of eastern Michoacán and western México states is the winter habitat of monarch butterflies (Danaus plexippus), which migrate from temperate regions of North America east of the Rocky Mountains. The Mariposa Monarca Biosphere Reserve is within this habitat.
Monarch butterflies, with their striking black-and-orange coloring, have made a partial recovery in numbers of butterflies migrating from the U.S. and Canada to Mexico this year, after historic ...
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