The IUCN Red List status for Tamaulipas Pygmy-Owl is Least Concern (BirdLife International 2015); its population size (20,000 – 49,000 mature individuals) and distribution (27,200 km2) do not meet the thresholds for classification as Vulnerable (BirdLife International 2015). It is considered Endangered under Mexican law (NOM-059 SEMARNAT 2010). This is also a species of high tri-national concern (Mexico-U.S.-Canada) to Partners in Flight (Berlanga et al. 2010), as a species at greatest risk of extinction. Based on determinations of habitat loss, Berlanga et al. (2010) estimated that 15-49% of its population has been lost in Mexico during the last century.