In February 2020, I made my second visit to the small cloud forest reserves, about two hours northwest of Mexico City, where each year hundreds of millions of monarch butterflies from southeastern Canada and the northeastern United States spend the period between mid-November and mid-March.  I took a bus from Terminal Observatorio in Mexico City to Zitacuaro, and then a taxi to JM Butterfly B&B in nearby Macheros (both the bus and the taxi cost MXN300, around US$15).  JM Butterfly B&B arranged trips to Cerro Pelon (not very crowded and just a few minutes from the hotel) and El Rosario, the largest sanctuary, about 90 minutes from the hotel, but very crowded with visitors, although the most monarchs.