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Monarch butterflies: when snow threatens their survival
Images of the El Rosario sanctuary after the strong storm on in march 2016.

Por:Univision

A wind and snow storm hit the monarch butterfly sanctuary in Mexico on March 8th and 9th.
Jessey Dearing
A blanket of butterflies covered the snow in some areas of the El Rosario sanctuary.
Jessey Dearing
The storm toppled hundreds of trees in the area, also within the sanctuary.
Jessey Dearing
The majority of butterflies resisted clumped on the trees' branches and trunks.
Jessey Dearing
There are few images captured of this incredible species fighting to survive a snowstorm.
Jessey Dearing
The storm hit the sanctuaries hard but this species is an example of resilience.
Jessey Dearing
These butterflies can survive as long as they hang on to the trees. Danger comes when they fall to the ground.
Jessey Dearing
This butterfly performs one of the most outstanding migrations in nature.
Jessey Dearing
Almost all monarchs from North America are concentrated in these 9.9 acres in Mexico: that is what makes these storms so dangerous.
Jessey Dearing