LC
Rock Sandpiper Calidris ptilocnemis



Family: Scolopacidae (Sandpipers, Snipes, Phalaropes)

Authority: (Coues, 1873)

Red List Category

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Justification of Red List category

This species has a large geographic range size (extent of occurrence >4 million km2 in both the breeding and non-breeding seasons), and so does not approach Criterion B thresholds. It also has a relatively large estimated population size (140,000-150,000 mature individuals; Partners in Flight 2023), and so does not approach Criteria C or D thresholds. Considering its population trend over three generations (c. 15 years), data from the Christmas Bird Count (Meehan et al. 2022) indicate that it has been broadly stable following a long-term decline, albeit with interannual fluctuations. Over the same period, Partners in Flight (2023) reports a decline of c. 10%, albeit with large confidence intervals. Although the population has declined and may still be declining, it does not currently appear to be declining at a rate approaching Criterion A thresholds. Hence, the species continues to warrant listing as Least Concern.



Population size: 140000 mature individuals

Population trend: decreasing

Extent of occurrence (breeding/resident): 4,120,000 km2

Country endemic: no

Attributes
USFWS - Bird of Conservation Concern
Realm - Nearctic
Realm - Palearctic
IUCN System - Freshwater
IUCN System - Terrestrial
IUCN System - Marine

Recommended citation
BirdLife International (2024) Species factsheet: Rock Sandpiper Calidris ptilocnemis. Downloaded from https://datazone.birdlife.org/species/factsheet/rock-sandpiper-calidris-ptilocnemis on 23/11/2024.
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 23/11/2024.