The forest there was even larger than the one at Cerro Pelon. A long walk of 5 km dropped us into a small creek valley at 8200 feet where millions of monarchs were gathered in the Oyamel firs.
Thousands of others flew around us as they gathered at the creek to take a drink. It was magical! It was astouding too to think that the entire North American population of monarchs were wintering in just a few small locations such as this in Mexico.
Though we saw some evidence of logging it appeared to be kept at a minimum thanks to the military, federal police and locals who benefit from the ecotourism.
Okay two questions:
First – It took us 8.5 hours to get to Angangueo. How long would it take a 1/2 gram monarch to make the same journey flying 40 miles a day?
Second question, The Monarch Butterfly Biosphere Reserve in Mexico is a Unesco World Hertiage Site, what is the criteria used to become such a site?