LC
Henslow's Sparrow Passerculus henslowii



Family: Passerellidae (New World sparrows)

Authority: (Audubon, 1829)

Red List Category

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Justification of Red List category
This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population size is very large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). The population trend now appears to be increasing, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). Therefore, the species has been reassessed as Least Concern.



Population size: 410000 mature individuals

Population trend: increasing

Extent of occurrence (breeding/resident): 2,000,000 km2

Country endemic: no

Attributes
Realm - Nearctic
Land-mass type - continent
USFWS - Bird of Conservation Concern
IUCN System - Freshwater
IUCN System - Terrestrial

Recommended citation
BirdLife International (2024) Species factsheet: Henslow's Sparrow Passerculus henslowii. Downloaded from https://datazone.birdlife.org/species/factsheet/henslows-sparrow-passerculus-henslowii on 23/12/2024.
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 23/12/2024.