The home range of moustached tamarins is between 25 and 50 hectares. Ecology Moustached tamarins are omnivorous, frugivorous and insectivorous. Their diet mainly consists of fruits, nectar, gum exudates, invertebrates and small vertebrates. Invertebrates include katydids, stick grasshoppers, and spiders. Vertebrates include lizards and frogs. Gum feeding is seasonal, however it is a dietary staple during dry and early wet seasons when other resources are scarce. Exudates supplement nutrients and balance mineral intake; which prevent the species from experiencing a range of detrimental effects from a low-calcium and high-phosphorus insectivorous diet. They display a highly opportunistic foraging pattern, and the ratio and variety of their comestibles depend on the availability in their geographical location. Moustached tamarins select trees by the amount of nectar they yield, rather than proximity to their home range. This higher volume of nectar makes the chosen trees more reliable because it allows them to feed for longer periods. Their remarkable spatial memory allows them to quickly recall the location of fruiting trees. Spatial memory is vital because it aids in the exploitation of a widely scattered set of feeding sites and minimizes effort in foraging. The moustached tamarin monkey is a crucial seed disperser for many plant species as a result of their diverse diet. They spread the seeds of fruits they ingest, indirectly impacting forest regeneration and maintenance. They are opportunistic feeders, utilizing a wide range of plant resources, allowing them to disperse a variety of seed species, providing significant benefit to their ecosystem. Interspecific relationships Moustached tamarins are territorial, however, they sometimes join with groups of brown-mantled tamarins (Saguinus fuscicollis) and Geoffroy's saddle-back tamarin (Leontocebus nigrifrons). These species can cohabit because they have varying locomotor types, hunting techniques, support preference, food selection, and reside in different strata of their forest habitat. The brown-mantled tamarin and the moustached tamarin do not compete for the same resources. Sharing territory with another species facilitates predator avoidance, increasing survival chances for both groups. Having more eyes and ears provides greater protection. Behaviour Moustached tamarins are arboreal, diurnal, and precocial. Tamarins walk and run on all fours, similar to squirrels and use their claws for stability. The moustached tamarin monkey exercises three types of locomotion. Symmetrical quadrupedalism is the most frequently used locomotion type, followed by asymmetric quadrupedalism, and leaping. The kind of leap depends on the layer of the forest they occupy. In the lower canopy “trunk-to-trunk” leaps