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 |
|---|---|---|
| 2018 | 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 | full migrant | Forest dependency | High |
| Land mass type | Average mass | 46 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 2,440,000 | medium |
| Extent of Occurrence non-breeding (km2) | 2,600,000 | medium |
| Number of locations | - | |
| Fragmentation | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 2000000 | poor | estimated | 2016 |
| Population trend | Decreasing | inferred | - | |
| 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 | - | - | - | |
| Largest subpopulations | - | - | - |
Population justification: Partners in Flight estimated the population size to be 2,000,000 mature individuals (Rosenberg et al. 2016).
Trend justification:
The species is tentatively assessed as being in decline due to habitat loss per Tracewski et al. (2016).
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Canada | N | Extant | ||||
| Guatemala | N | Extant | ||||
| Mexico | N | Extant | ||||
| USA | N | Extant | Yes |
| Country/Territory | IBA Name |
|---|
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Boreal | suitable | breeding |
| Forest | Subtropical/Tropical Moist Lowland | major | non-breeding |
| Forest | Subtropical/Tropical Moist Lowland | major | breeding |
| Forest | Subtropical/Tropical Moist Montane | major | non-breeding |
| Forest | Temperate | major | breeding |
| Shrubland | Subtropical/Tropical High Altitude | suitable | non-breeding |
| Altitude | 0 - 2900 m | Occasional altitudinal limits |
Recommended citation
BirdLife International (2019) Species factsheet: Sphyrapicus nuchalis. Downloaded from
http://www.birdlife.org on 15/12/2019.
Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 15/12/2019.
