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 |
|---|---|---|
| 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 | low |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 10,900,000 km2 | medium |
| Extent of Occurrence (non-breeding) | 2,310,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | poor | estimated | 2009 |
| Population trend | increasing | - | estimated | - |
| Generation length | 4.3 years | - | - | - |
Trend justification: This species has undergone a small or statistically insignificant increase over the last 40 years in North America (data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007).
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Canada | extant | native | ||||
| Colombia | extant | native | ||||
| Costa Rica | extant | native | ||||
| El Salvador | extant | native | ||||
| Guatemala | extant | native | ||||
| Honduras | extant | native | ||||
| Mexico | extant | native | ||||
| Nicaragua | extant | native | yes | |||
| Panama | extant | vagrant | ||||
| USA | extant | native | yes |
| Country/Territory | IBA Name |
|---|
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Desert | Hot | suitable | breeding |
| Forest | Subtropical/Tropical Moist Montane | suitable | non-breeding |
| Forest | Temperate | major | breeding |
| Grassland | Subtropical/Tropical Dry | suitable | breeding |
| Grassland | Subtropical/Tropical Dry | suitable | non-breeding |
| Grassland | Temperate | suitable | breeding |
| Marine Intertidal | Mud Flats and Salt Flats | suitable | non-breeding |
| Rocky areas (eg. inland cliffs, mountain peaks) | suitable | breeding | |
| Shrubland | Subtropical/Tropical Dry | suitable | breeding |
| Altitude | 0 - 4000 m | Occasional altitudinal limits |
Recommended citation
BirdLife International (2024) Species factsheet: Violet-green Swallow Tachycineta thalassina. Downloaded from
https://datazone.birdlife.org/species/factsheet/violet-green-swallow-tachycineta-thalassina on 22/12/2024.
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 22/12/2024.