On the slopes of a volcano in central Mexico, biologist Cuauhtémoc Sáenz-Romero and his team envision a climate refuge for oyamel fir trees and the monarch butterflies that depend on them.
Each autumn, a new generation of monarch butterflies is born in the northern United States and southern Canada. Hundreds of millions of these butterflies then fly to ... will run out of mountain.
Recent patrons said it was a beautiful and unique place to spend an afternoon, and they were amazed to see the butterflies flying all around them. Another highlight was feeding the birds in the ...
27. All Ogasawara blue butterflies bred outside the islands were thought to have died out in August or before due to a decline in reproduction ability caused by inbreeding. Specimens measured ...