CR
Socorro Mockingbird Mimus graysoni



Family: Mimidae (Mockingbirds and thrashers)

Authority: (Lawrence, 1871)

Red List Category

Criteria: B1ab(ii,iii)

Click here for more information about the Red List categories and criteria

Justification of Red List category
Intensive sheep-grazing and a persistent locust swarm are reducing and degrading habitat for this species. Combined with cat predation, which effectively removes mockingbirds from areas with little or no understorey, declines in its extremely small range are considered likely. Sheep eradication appears to have led to the population trend stabilising, but despite this and ongoing cat eradication, the species has not yet expanded its range. Therefore, it is listed as Critically Endangered.



Population size: 190-280

Population trend: Stable

Extent of occurrence (breeding/resident): 50 km2

Country endemic: Yes

Attributes
Land-mass type - oceanic island
Realm - Neotropical
IUCN Ecosystem -- Terrestrial biome

Recommended citation
BirdLife International (2019) Species factsheet: Mimus graysoni. Downloaded from http://www.birdlife.org on 23/03/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/03/2019.