32Species distribution maps are essential for assessing extinction risk and guiding conservation efforts. Here, 33we developed a data-driven, reproducible geospatial workflow to map species distributions and evaluate 34 their conservation status consistent with the guidelines and criteria of the IUCN Red List. Our workflow 35 follows five automated steps to refine the distribution of a species starting from its Extent of Occurrence 36(EOO) to Area of Habitat (AOH) within the species range. The ranges are produced with an Inverse 37 Distance Weighted (IDW) interpolation procedure, using presence and absence points derived from primary 38 biodiversity data. As a case-study, we mapped the distribution of 2,273 bird species in the Americas, 55% 39 of all terrestrial birds found in the region. We then compared our produced species ranges to the expert-40 drawn IUCN/BirdLife range maps and conducted a preliminary IUCN extinction risk assessment based on 41 criterion B (Geographic Range). We found that our workflow generated ranges with fewer errors of 42 omission, commission, and a better overall accuracy within each species EOO. The spatial overlap between 43 both datasets was low (28%) and the expert-drawn range maps were consistently larger due to errors of 44 commission. Their estimated Area of Habitat (AOH) was also larger for a subset of 741 forest-dependent 45 birds. We also found that incorporating geospatial data increased the number of threatened species by 52% 46 in comparison to the 2019 IUCN Red List, and 103 species could be placed in threatened categories (VU, 47 EN, CR) pending further assessment. The implementation of our geospatial workflow provides a valuable 48 alternative to increase the transparency and reliability of species risk assessments and improve mapping 49 species distributions for conservation planning and decision-making.50 51