 The Orinoco crocodile (Crocodylus intermedius) is the largest crocodile and the most threatened by extinction in the Neotropics due to overexploitation for the skin trade during the early–middle twentieth century. Knowledge of their ecology is poor in Colombia because long-term armed conflict has restricted fieldwork. In 2015, we reintroduced four captive-reared adult crocodiles, each equipped with a Sirtrack KiwiSat 202 satellite transmitter and monitored their movements from 2015 to 2018.