Monarch butterflies are now listed as endangered because of fast dwindling populations in North America.
After wintering in the mountains of central Mexico, the butterflies migrate to the north, breeding multiple generations along the way for thousands of miles. The offspring that reach southern Canada then begin the trip back to Mexico at the end of summer.
A smaller group spends winters in coastal California, then disperses in spring and summer across several states west of the Rocky Mountains. This population has seen an even more precipitous decline than the eastern monarchs, although there was a small bounce back last winter. “There are things people can do to help,” she said, including planting milkweed, a plant that the caterpillars depend upon.The United States has not listed monarch butterflies under the Endangered Species Act, but several environmental groups believe it should be listed.
The new figures, of between 3,726 and 5,578 wild tigers worldwide, reflect better methods for counting tigers and, potentially, an increase in their overall numbers, said Dale Miquelle, coordinator for the nonprofit Wildlife Conservation Society’s tiger program.
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Beloved monarch butterflies now listed as endangeredThe monarch butterfly fluttered a step closer to extinction Thursday, as scientists put the iconic orange-and-black insect on the endangered list because of its fast dwindling numbers.
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