Which is the best park to see a Black Howler?
Parque Estadual Encontro das Águas
In Parque Estadual Encontro das Águas, Brazil, about 70% of wildlife watchers report a Black Howler sighting on a given day, the highest of the 4 parks where we can rate it, from GBIF citizen-science data.
Where else can you see a Black Howler?
El Impenetrable National Park and more
After Parque Estadual Encontro das Águas, the next-best odds of seeing a Black Howler are in El Impenetrable National Park (Argentina, about 40%), Madidi National Park (Bolivia, about 40%) and Iberá National Park (Argentina, about 40%).
When is the best time to see a Black Howler?
It depends on the park
In the top parks, the best months are April in Parque Estadual Encontro das Águas (about 90%), August to October in El Impenetrable National Park (about 60%) and January in Madidi National Park (about 70%), as the share of wildlife watchers who report a Black Howler on a given day. Each park's Black Howler page has the full month-by-month chart.