Black-faced Black Spider Monkey (Ateles chamek)

Black-faced Black Spider Monkey (Ateles chamek)

Almost every day I encountered either spider or howler monkeys. This black-faced black spider monkey (Ateles chamek) is…


Red Howler Monkey (Alouatta seniculus)

Red Howler Monkey (Alouatta seniculus)

There are many groups of both spider and howler monkeys roaming the forest around Amazon Research and Conservation…


Black and Gold Howler (Alouatta caraya)

Black and Gold Howler (Alouatta caraya)

This part of the Pantanal has numerous forested islands. Islands, as they are truly so during the annual floods, but…


Black and Gold Howler (Alouatta caraya)

Black and Gold Howler (Alouatta caraya)

This part of the Pantanal has numerous forested islands. Islands, as they are truly so during the annual floods, but…


Peruvian spider monkey (Ateles chamek)

Peruvian spider monkey (Ateles chamek)

During my 2 weeks in the Bolivian Amazon I only had this very brief encounter. They are always on the move, so…


Bolivian red howler (Alouatta sara)

Bolivian red howler (Alouatta sara)

I heard one or more groups every day, but seeing them was another matter. This was my closet encounter during my stay.…