LC
MacGillivray's Warbler Geothlypis tolmiei



Taxonomy

Taxonomic note

Geothlypis tolmiei (del Hoyo and Collar 2016) was previously placed in the genus Oporornis following AOU (1998 & supplements); Sibley & Monroe (1990, 1993); Stotz et al. (1996).

 

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.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2021 Least Concern
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
Species attributes

Migratory status full migrant Forest dependency Medium
Land mass type Average mass 10 g
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 5,250,000 medium
Extent of Occurrence non-breeding (km2) 2,090,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 11000000 poor estimated 2019
Population trend Decreasing estimated -
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 11 million mature individuals (Partners in Flight 2019).

Trend justification: The species is undergoing a moderate decline (Partners in Flight 2019; Rosenberg et al. 2019). Short-term trends suggest that the population has declined by 10% over the past ten years (Pardieck et al. 2018).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Bahamas V Extant
Belize V Extant Yes
Canada N Extant Yes Yes
Costa Rica N Extant Yes Yes
El Salvador N Extant Yes
Guatemala N Extant Yes
Honduras N Extant Yes
Mexico N Extant Yes Yes Yes
Nicaragua N Extant Yes Yes
Panama N Extant Yes Yes
USA N Extant Yes Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Boreal suitable breeding
Forest Temperate major breeding
Shrubland Subtropical/Tropical High Altitude suitable non-breeding
Shrubland Subtropical/Tropical Moist major non-breeding
Shrubland Temperate suitable breeding
Altitude 1000 - 2700 m Occasional altitudinal limits (max) 3000 m

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Climate change & severe weather Other impacts Timing Scope Severity Impact
Ongoing Unknown Unknown Unknown
Stresses
Indirect ecosystem effects

Recommended citation
BirdLife International (2022) Species factsheet: Geothlypis tolmiei. Downloaded from http://www.birdlife.org on 14/08/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 14/08/2022.