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 |
|---|---|---|
| 2021 | 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 | low |
| Land mass type | Average mass | 56 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 973,000 | medium |
| Extent of Occurrence non-breeding (km2) | 846,000 | medium |
| Number of locations | - | |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 2000000 | medium | estimated | 2019 |
| Population trend | unknown | not applicable | - | |
| 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 | - | - | - |
Population justification: The global population is estimated to number 2 million mature individuals (Partners in Flight 2019).
Trend justification: The population trend is difficult to determine. The species has been expanding its range since 1958 into southern U.S.A. (del Hoyo et al. 2004), but it is unclear whether this trend is continuing.
| Country/Territory | Presence | Origin | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Canada | extant | vagrant | ||||
| Mexico | extant | native | yes | yes | yes | yes |
| USA | extant | native | yes |
| Country/Territory | IBA Name |
|---|
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Terrestrial | Plantations | suitable | non-breeding |
| Artificial/Terrestrial | Plantations | suitable | breeding |
| Artificial/Terrestrial | Subtropical/Tropical Heavily Degraded Former Forest | suitable | non-breeding |
| Artificial/Terrestrial | Subtropical/Tropical Heavily Degraded Former Forest | suitable | breeding |
| Forest | Subtropical/Tropical Dry | major | non-breeding |
| Forest | Subtropical/Tropical Dry | major | breeding |
| Forest | Subtropical/Tropical Moist Lowland | suitable | non-breeding |
| Forest | Subtropical/Tropical Moist Lowland | suitable | breeding |
| Savanna | Dry | suitable | non-breeding |
| Savanna | Dry | suitable | breeding |
| Shrubland | Subtropical/Tropical Dry | suitable | non-breeding |
| Shrubland | Subtropical/Tropical Dry | suitable | breeding |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | suitable | non-breeding |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | suitable | breeding |
| Altitude | 0 - 2000 m | Occasional altitudinal limits |
Recommended citation
BirdLife International (2023) Species factsheet: Tyrannus crassirostris. Downloaded from
http://datazone.birdlife.org/species/factsheet/thick-billed-kingbird-tyrannus-crassirostris on 01/06/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://datazone.birdlife.org on 01/06/2023.
