NT
Semipalmated Sandpiper Calidris pusilla



Family: Scolopacidae (Sandpipers, Snipes, Phalaropes)

Authority: (Linnaeus, 1766)

Red List Category

Criteria: A2bd+4bd

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Justification of Red List category
Although uncertain, data from both the non-breeding range and from migration sites indicate that the population has been declining at a moderately rapid to rapid rate potentially exceeding 20% over the past three generations. The population size and range remain large. The drivers of these declines are not well understood, nor are reasons for disparate trends in different parts of its range. As rates of population reduction approach threatened thresholds, Semipalmated Sandpiper is assessed as Near Threatened.

Population size: 9000000-11000000 mature individuals

Population trend: decreasing

Extent of occurrence (breeding/resident): 9,200,000 km2

Country endemic: no

Attributes
Realm - Nearctic
Realm - Neotropical
Realm - Palearctic
IUCN System - Freshwater
IUCN System - Terrestrial
IUCN System - Marine

Recommended citation
BirdLife International (2024) Species factsheet: Semipalmated Sandpiper Calidris pusilla. Downloaded from https://datazone.birdlife.org/species/factsheet/semipalmated-sandpiper-calidris-pusilla on 21/12/2024.
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 21/12/2024.