Data Zone
Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2019 | Near Threatened | A2bc; B1b(ii,iii,iv,v)+2b(ii,iii,iv,v) |
| 2016 | Near Threatened | B1ab(ii,iii,iv,v) |
| 2015 | Near Threatened | B1ab(ii,iii,iv,v) |
| 2012 | Least Concern | |
| 2009 | Least Concern | |
| 2008 | Least Concern | |
| 2004 | Least Concern | |
| 2000 | Lower Risk/Least Concern | |
| 1994 | Not Recognised | |
| 1988 | Not Recognised |
| Migratory status | not a migrant | Forest dependency | High |
| Land mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 27,800 | medium |
| Extent of Occurrence breeding/resident (km2) | 500 | |
| Number of locations | - | |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 20000-49999 | poor | estimated | 2017 |
| Population trend | Decreasing | estimated | - | |
| Decline (3 years/1 generation past) | - | - | - | |
| Decline (5 years/1 generation past) | - | - | - | |
| Decline (10 years/1 generation past) | - | - | - | |
| Decline (10 years/3 generation future) | - | - | - | |
| Decline (10 years/3 generation past and future) | - | - | - | |
| Number of subpopulations | - | - | - | |
| Percentage in largest subpopulation | - | - | - | |
| Generation length (yrs) | 3.8 | - | - | - |
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.
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Mexico | N | Extant | Yes |
| Country/Territory | IBA Name |
|---|---|
| Mexico | Sierra del Abra - Tanchipa |
| Mexico | Tlanchinol y Bosques de Montaña del Noreste de Hidalgo |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Montane | major | resident |
| Altitude | 900 - 2100 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Biological resource use | Logging & wood harvesting - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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Recommended citation
BirdLife International (2023) Species factsheet: Glaucidium sanchezi. Downloaded from
http://www.birdlife.org on 22/03/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 22/03/2023.
