IUCN Red List Criteria
| Critically Endangered |
|
| Endangered |
|
| Vulnerable |
A2c+3c+4c |
IUCN Red List history
| Year |
Category |
| 2012 |
Vulnerable |
| 2008 |
Vulnerable |
| 2004 |
Vulnerable |
| 2000 |
Vulnerable |
| 1996 |
Vulnerable |
| 1994 |
Vulnerable |
| 1988 |
Threatened |
Species attributes
| Migratory status |
full migrant |
Forest dependency |
Does not normally occur in forest |
| Land mass type |
continent
|
Average mass |
- |
Distribution
| |
Estimate |
Data quality |
| Extent of Occurrence breeding/resident (km2) |
98,900 |
medium |
| Number of locations |
11-100 |
- |
| Fragmentation |
|
- |
Population & trend
| |
Estimate |
Data quality |
Derivation |
Year of estimate |
| No. of mature individuals |
6000-15000 |
poor |
Estimated |
2000 |
| Population trend |
Decreasing |
poor |
|
- |
| Number of subpopulations |
2-100 |
- |
- |
- |
| Largest subpopulation |
1001-10000 |
- |
- |
- |
| Generation length (yrs) |
3.6 |
- |
- |
- |
|
Population justification: The population is estimated to number 10,000-19,999 individuals based on an assessment of known records, descriptions of abundance and range size. This is consistent with recorded population density estimates for congeners or close relatives with a similar body size (the lower limit of such estimates for tyrannids is one individual/km2), and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied. This estimate equates to 6,667-13,333 mature individuals, rounded to 6,000-15,000 mature individuals here. |
|
Trend justification: This species's population is suspected to be declining rapidly, in line with rates of habitat loss within its range. |
Country/Territory distribution
| Country/Territory |
Occurrence status |
Extinct |
Breeding |
Non-breeding |
Passage |
| Argentina |
Native |
No |
Yes |
|
|
| Brazil |
Native |
No |
Yes |
|
|
| Paraguay |
Native |
No |
Yes |
|
|
| Uruguay |
Native |
No |
Yes |
|
|
Important Bird Areas where this species has triggered the IBA criteria
| Country/Territory |
IBA Name |
IBA link |
| Argentina |
Concepción-Chavarría |
 |
| Argentina |
Cuenca del río Aguapey |
|
| Argentina |
El Cachapé |
|
| Argentina |
Estancia Guaycolec |
|
| Argentina |
Estancia Mora Cué y alrededores |
|
| Argentina |
Estancia Puerto Valle |
|
| Argentina |
Estancia San Juan Poriahú |
|
| Argentina |
Estero Tapenagá |
|
| Argentina |
Galarza |
|
| Argentina |
Lomada de San Alonso |
|
| Argentina |
Parque Nacional Mburucuyá |
|
| Argentina |
Reserva El Bagual |
|
| Argentina |
Reserva Natural Rincón de Santa María |
|
| Argentina |
Riacho He He |
|
| Argentina |
Rincón del Socorro-Iberá |
|
| Argentina |
Valle Fluvial del Río Paraguay |
|
| Paraguay |
Arroyos y Esteros |
|
| Paraguay |
Campo Llano |
|
| Paraguay |
Estancia La Graciela |
|
| Paraguay |
Estancia La Rafaela |
|
| Paraguay |
Estancia Redondo |
|
| Paraguay |
Estancia Sombrero |
|
| Paraguay |
Estancias Golondrina - El Trébol |
|
| Paraguay |
Estero Ñu Guazú - General Artigas |
|
| Paraguay |
Lago Ypoa |
|
| Paraguay |
Parque Nacional San Rafael |
|
Habitats & altitude
| Habitat (level 1) |
Habitat (level 2) |
Importance |
Occurrence |
| Grassland |
Subtropical/Tropical Seasonally Wet/Flooded |
major |
breeding |
| Grassland |
Subtropical/Tropical Seasonally Wet/Flooded |
major |
non-breeding |
| Savanna |
Dry |
major |
non-breeding |
| Savanna |
Dry |
major |
breeding |
| Shrubland |
Subtropical/Tropical Moist |
suitable |
breeding |
| Shrubland |
Subtropical/Tropical Moist |
suitable |
non-breeding |
| Wetlands (inland) |
Bogs, Marshes, Swamps, Fens, Peatlands |
major |
breeding |
| Wetlands (inland) |
Bogs, Marshes, Swamps, Fens, Peatlands |
major |
non-breeding |
|
Altitude
|
0 - 500 m
|
Occasional altitudinal limits
|
|
Threats & impact
| Threat (level 1) |
Threat (level 2) |
Impact and Stresses |
| Agriculture & Aquaculture |
Annual & perennial non-timber crops / Agro-industry farming |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
Rapid Declines |
Medium Impact: |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
| Agriculture & Aquaculture |
Annual & perennial non-timber crops / Scale Unknown/Unrecorded |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
Rapid Declines |
Medium Impact: |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
| Agriculture & Aquaculture |
Annual & perennial non-timber crops / Small-holder farming |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Minority (<50%) |
Slow, Significant Decline |
Low Impact: 5 |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
| Agriculture & Aquaculture |
Livestock farming & ranching / Small-holder grazing, ranching or farming |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
Slow, Significant Decline |
Medium Impact: |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
| Natural system modifications |
Fire & fire suppression / Increase in fire frequency/intensity |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Majority (50-90%) |
Slow, Significant Decline |
Medium Impact: |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
| Pollution |
Agricultural & forestry effluents / Type Unknown/Unrecorded |
Timing |
Scope |
Severity |
Impact |
| Ongoing |
Unknown |
Unknown |
Unknown |
| Stresses |
|---|
| Ecosystem degradation, Ecosystem conversion |
|
Recommended citation
BirdLife International (2013) Species factsheet: Alectrurus risora. Downloaded from
http://www.birdlife.org on 20/05/2013.
Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 20/05/2013.
This information is based upon, and updates, the information published in BirdLife International (2000)
Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004)
Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.
To provide new information to update this factsheet or to correct any errors, please email BirdLife
To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.
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