Camera Trap Days (CTD) is an instrument that promotes participatory science in Colombia, led by the Colombian Phototrapping Network and the Humboldt Institute with the support of Wildlife Insights, which seeks to compile wildlife records using camera traps for one month (October 2021) and very quickly thanks to technological advances in data organization and artificial intelligence generate a local and national report on the biodiversity of medium and large mammals and birds mainly of terrestrial habits. The implementation of this instrument contributes to the appropriation of nature through knowledge and detonates actions at a local scale for the conservation of the species recorded thanks to the instrument. The instrument also allows the transfer of multiscale knowledge starting from a local level data collection from the new citizen scientists and becoming available at the national level for decision making by different entities, whether individual or collective, governmental or NGOs, among others. The implementation of the instrument can take place in rural or urban territories.