Data Zone
Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2020 | Least Concern | |
| 2016 | Least Concern | |
| 2012 | Least Concern | |
| 2009 | Least Concern | |
| 2008 | Least Concern | |
| 2004 | Least Concern | |
| 2000 | Lower Risk/Least Concern | |
| 1994 | Lower Risk/Least Concern | |
| 1988 | Lower Risk/Least Concern |
| Migratory status | not a migrant | Forest dependency | medium |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 535,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 50000-499999 mature individuals | poor | estimated | 2019 |
| Population trend | decreasing | - | suspected | - |
| Generation length | 4.9 years | - | - | - |
Population justification: The global population is estimated to number 50,000-499,999 mature individuals (Partners in Flight 2019).
Trend justification:
The species is undergoing a moderate decline (Partners in Flight 2019), which is thought to be caused by low levels of habitat loss within the range (Tracewski et al. 2016).
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| El Salvador | extant | native | yes | |||
| Guatemala | extant | native | yes | |||
| Honduras | extant | native | yes | |||
| Mexico | extant | native | yes | |||
| Nicaragua | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| El Salvador | Montecristo Forest |
| Guatemala | Atitlan |
| Guatemala | Cuchumatanes |
| Guatemala | Montecristo |
| Guatemala | Santiaguito Volcano |
| Guatemala | Sierra de las Minas - Motagua |
| Mexico | Cerros de Chalchihuitán |
| Mexico | Omiltemi |
| Mexico | Sierra de Zongolica-Tenango |
| Mexico | Tlanchinol y Bosques de Montaña del Noreste de Hidalgo |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Terrestrial | Subtropical/Tropical Heavily Degraded Former Forest | suitable | non-breeding |
| Forest | Subtropical/Tropical Moist Montane | major | resident |
| Altitude | 1300 - 3300 m | Occasional altitudinal limits | (max) 3400 m |
Recommended citation
BirdLife International (2024) Species factsheet: Unicolored Jay Aphelocoma unicolor. Downloaded from
https://datazone.birdlife.org/species/factsheet/unicolored-jay-aphelocoma-unicolor on 23/11/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 23/11/2024.