A small monkey that moves quickly between branches in tropical forests near rivers.
White markings surround the eyes; its long tail does not grip branches and helps it balance while moving.
Common squirrel monkeys do not use every part of a forest in the same way. A group on an island in French Guiana tended to travel in lower canopy levels and feed higher up. Resting and social activity occurred more frequently in the undergrowth.
A study published in 2002 observed squirrel monkeys introduced to Ilet-la-Mère, French Guiana, during the rainy season from April to July 1997. The founders originated in French Guiana and Suriname. Researchers observed one troop for 101 hours, recording height, location and behaviour every ten minutes. Its home range covered 12.3 hectares, yet 60% of recorded locations were concentrated within a three-hectare core, roughly a quarter of that area. Feeding and foraging accounted for about 63% of daily activity records. The group’s forest life combined concentrated use of a core area with different heights for travel, meals and rest.
An extinction-risk assessment has not been added yet.
In 2024, the Norwegian Scientific Committee for Food and Environment assessed a proposed zoo-to-zoo transfer of two captive-born male common squirrel monkeys. It concluded that the transfer would not harm the species’ survival because it involved no new capture from the wild and formed part of a coordinated zoo breeding programme. This supports management of captive populations without removing animals from wild groups.