Worthen's Sparrow Spizella wortheni

Family: Passerellidae (New World sparrows)

Authority: Ridgway, 1884

Red List Category

Criteria: C2a(ii)

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Justification of Red List category
This species has a very small and declining population, and fledging success is very low. It is therefore listed as Endangered.

Population size: 250-999

Population trend: Decreasing

Extent of occurrence (breeding/resident): 13,900 km2

Country endemic: Yes

Land-mass type - continent
Realm - Nearctic
Realm - Neotropical
IUCN Ecosystem -- Terrestrial biome

Recommended citation
BirdLife International (2023) Species factsheet: Spizella wortheni. Downloaded from http://datazone.birdlife.org/species/factsheet/worthens-sparrow-spizella-wortheni on 09/06/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 09/06/2023.