Tamaulipas Pygmy-owl Glaucidium sanchezi


Justification of Red List category
This species occupies a small range. Logging of forests is thought to be causing a decline in habitat availability and hence a decline in population size. However, the species is not thought to be severely fragmented or to occur in less than ten locations. It is therefore listed as Near Threatened.

Population justification
Partners in Flight estimated the population to number fewer than 50,000 mature individuals (A. Panjabi in litt. 2017), thus it is placed in the band 20,000-49,999 mature individuals here.

Trend justification
Habitat loss through logging is known to occur within the species's range (König and Weick 2008); a remote sensing study found that forest was lost at a rate of 2% over three generations (11.4 years) between 2000 and 2012 within the species's range (Tracewski et al. 2016). Partners in Flight report a small or non-significant population decline since the 1970s (A. Panjabi in litt. 2017). Pronatura (2012) estimates that the population has declined by 15-49% in 30 years, which equates to a decline of 6-23% over three generations. Further research is needed to confirm the magnitude of the declines.

Distribution and population

This species is found in montane forest in three states in north-east Mexico: south Tamaulipas, south-east San Luis Potosí and the extreme north of Hidalgo (Holt et al. 1999).


The species inhabits subtropical, humid evergreen and semi-deciduous forest, pine-evergreen forest and typically cloud forest (Holt et al. 1999). It nests in holes in trees, especially old woodpecker nest sites.


Logging operations within the species's range are thought to be the principal threat to the species.

Conservation actions

Conservation and Research Actions Underway

No targeted conservation actions are known for this species.

Conservation and Research Actions Proposed

Implement monitoring to establish population trends. Identify threats and investigate the extent of habitat loss. Carry out surveys to identify the population size, population structure and number of sites of occurrence. Protect remaining habitat.


Text account compilers
Symes, A., Taylor, J., Ashpole, J, Ekstrom, J., Hermes, C., Butchart, S.

Panjabi, A. & Pronatura

Recommended citation
BirdLife International (2024) Species factsheet: Glaucidium sanchezi. Downloaded from https://datazone.birdlife.org/species/factsheet/tamaulipas-pygmy-owl-glaucidium-sanchezi on 28/02/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org on 28/02/2024.