Where to see
Danaus plexippus
Reserva de la Biosfera Mariposa Monarca leads · 28 parks ranked by real sighting rates
Share of wildlife watchers reporting a Monarch during a day in the park, from citizen-science data (GBIF)
Reserva de la Biosfera Mariposa Monarca
In Reserva de la Biosfera Mariposa Monarca, Mexico, about 90% of wildlife watchers report a Monarch sighting on a given day, the highest of the 28 parks where we can rate it, from GBIF citizen-science data.
Acadia National Park and more
After Reserva de la Biosfera Mariposa Monarca, the next-best odds of seeing a Monarch are in Acadia National Park (United States, about 40%), Shenandoah National Park (United States, about 40%) and Arrecifes de Cozumel National Park (Mexico, about 40%). Outside North America, the best options are Lamington National Park in Oceania (about 30%), Henri Pittier National Park in South America (about 30%) and Cerro Azul Meámbar National Park in Central America (about 20%).
It depends on the park
In the top parks, the best months are February and March in Reserva de la Biosfera Mariposa Monarca (over 90%), August and September in Acadia National Park (about 60%) and August in Shenandoah National Park (about 60%), as the share of wildlife watchers who report a Monarch on a given day. Each park's Monarch page has the full month-by-month chart.
