Sighting of Peruvian bald uakaris, Cacajao ucayalii, at the Estación Biológica Quebrada Blanco, northeastern Peru, 1985-2022

The file contains the dates of sightings or Peruvian bald uakaris, Cacajao ucayalii (Pitheciidae, Platyrrhini, Primates), collected during field research in primates and tropical ecology at the Estación Biológica Quebrada Blanco (EBQB), in northeastern Peruvian Amazonia. These data form the base of the publication: Heymann EW, Flores Amasifuén, Shahuano Tello N. 2025. Seasonality of sightings of Cacajao ucayalii at EBQB and implications concerning ranging patterns and habitat use. Primate Biology 12:1-5. https://doi.org/10.5194/pb-12-1-2025