Birds specimens of the zoological collection of the Universidad de Nariño, Colombia

We provide a complete dataset of bird specimens of the zoological collection at the Universidad de Nariño, Colombia. For every specimen, we reviewed taxonomic identifications to species level by applying curatorial procedures, including the comparison of skins, the use of taxonomic keys and primary literature, and by confirming georeferenced locality data. We present 1249 specimens from 419 species. Most records come from ecosystems in southwestern Colombia, department of Nariño. All records are in the Darwin Core standard and have been made available through the Colombian biodiversity portal (SiB-Colombia) and the GBIF. In addition, we projected these bird occurrences in a geographic context to analyze the density, representation of ecosystems, biogeographic regions, and administrative units (municipalities). We also examine the representation of relevant species regarding their endemism, migratory, or conservation status. With this information, we want to support research and training initiatives to support ecological planning with biogeographic approaches to understand the temporal changes in bird faunas.