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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.
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.
The butterflies’ migration from Canada and the United States to Mexico and back again is considered a marvel of nature. No single butterfly lives to complete the entire journey.
Frederick Albert Urquhart CM (December 13, 1911 – November 3, 2002) was a Canadian zoologist and professor of zoology who studied the migration of monarch butterflies, Danaus plexippus L. [1] [2] Together with his wife, Norah Roden Urquhart CM, he identified their migration routes, discovered that the migration spans multiple generations of butterflies, and found their wintering place in ...
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 population of monarch butterflies in the Mexican forests where they spend the winter fell to the second-lowest figure on record this season, offering a grim snapshot of the already endangered ...
The butterflies themselves aren't at risk of disappearing, but the monarchs’ migration is. It's the longest migration of any insect species known to science. After wintering in Mexico, the butterflies fly north, breeding multiple generations along the way for thousands of miles.
Flight of the Butterflies is a 2012 Canadian documentary film directed and co-written by Mike Slee for 3D IMAX, starring Megan Follows, Gordon Pinsent, and Shaun Benson. [1] The film covers Dr. Fred Urquhart's nearly 40-year-long scientific investigation into the monarch butterfly (Danaus plexippus), tracking the details of what is considered one of the longest known insect migrations: the ...