VU
Chestnut-collared Longspur Calcarius ornatus



Family: Calcariidae (Longspurs)

Authority: (Townsend, 1837)

Red List Category

Criteria: A2bc+3bc+4bc

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

Justification of Red List category
This species appears to have undergone a rapid decline, which is suspected to continue into the future. Therefore, it is listed as Vulnerable.



Population size: 3100000 mature individuals

Population trend: decreasing

Extent of occurrence (breeding/resident): 1,150,000 km2

Country endemic: no

Attributes
Realm - Nearctic
Realm - Neotropical
Land-mass type - continent
IUCN System - Terrestrial

Recommended citation
BirdLife International (2024) Species factsheet: Chestnut-collared Longspur Calcarius ornatus. Downloaded from https://datazone.birdlife.org/species/factsheet/chestnut-collared-longspur-calcarius-ornatus on 22/11/2024.
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 22/11/2024.