Some observations were previously recorded via the live-trapping of marmosets, beginning in the 1970s until the early 2010s; on one occasion, the captured marmosets were taken for closer examination and breeding at the Centro de Conservación y Reprodución de Primates, Iquitos. Using food baits at stationary sites, and recordings of their vocalizations, and those of tamarins, with whom they associate, were also employed to attract them.
Some observations were previously recorded via the live-trapping of marmosets, beginning in the 1970s until the early 2010s; on one occasion, the captured marmosets were taken for closer examinati,on and breeding at the Centro de Conservación y Reprodución de Primates, Iquitos. Using food baits at stationary sites and recordings of their vocalizations, and those of tamarins, with whom they associate, were also employed to attract them.