Purple Sandpiper

Purple Sandpiper

Calidris maritima
Purple Sandpiper, Liz Cutting

Introduction

This hardy wader is found on exposed rocky shores in winter; only its breeding plumage is purple-tinged.

Never common as a breeding bird, with only a handful of pairs recorded in northern Scotland, the Purple Sandpiper is now a less than annual breeder. A plump, stocky wader with distinctive yellow legs it is distributed around almost all coasts in winter, only being scarce in southern and eastern England.

Ringing records show that Purple Sandpipers are remarkably faithful to wintering sites, with individuals returning to the exact same stretch of coast year after year.

Purple Sandpiper, Liz Cutting

Key Stats

Status
Scarce
Scarce
Weight
Weight
70.8g
Eggs
Eggs
4-4
BTO Records
BTO Records
99k records
Population and distribution stats for:
Population Change
Population Change
15% decrease 1996/97–2021/22
Distribution Change
Distribution_change
11.3% expansion

Identification

Curated resources to aid in the identification of Purple Sandpiper

Songs and Calls

Listen to example recordings of the main vocalisations of Purple Sandpiper, provided by xeno-canto contributors.

Call:

Movement

Information about Purple Sandpiper movements and migration based on online bird portals (e.g. BirdTrack), Ringing schemes and tracking studies.

Britain & Ireland movement

View a summary of recoveries in the Online Ringing Report

Foreign locations of birds ringed or recovered in Britain & Ireland

Dots show the foreign destinations of birds ringed in Britain & Ireland, and the origins of birds ringed overseas that were subsequently recaptured, resighted or found dead in Britain & Ireland. Dot colours indicate the time of year that the species was present at the location.

  • Winter (Nov-Feb)
  • Spring (Mar-Apr)
  • Summer (May-Jul)
  • Autumn (Aug-Oct)
Foreign locations of birds ringed or recovered in Britain & Ireland

European movements

EuroBirdPortal uses birdwatcher's records, such as those logged in BirdTrack to map the flows of birds as they arrive and depart Europe. See maps for this species here.

The Eurasian-African Migration Atlas shows movements of individual birds ringed or recovered in Europe. See maps for this species here.

Biology

Lifecycle and body size information for Purple Sandpiper, including statistics on nesting, eggs and lifespan based on BTO ringing and nest recording data.

Productivity and Nesting

Nesting timing

Typical (exceptional) number of broods
1

Egg measurements

Typical length x width
38x26 mm
Mass (% shell)
13.3g (5%)

Clutch Size

Typical number
4-4 eggs
Observed minimum and maximum
3-4 eggs

Incubation

Incubation by
Male (occ. Female)
Typical duration
22-21 days

Fledging

Type of chick
Precocial, downy
Typical duration
28-15 days

Survival and Longevity

Survival is shown as the proportion of birds surviving from one year to the next and is derived from bird ringing data. It can also be used to estimate how long birds typically live.

View number ringed each year in the Online Ringing Report.

lifespan

Typical life expectancy of bird reaching breeding age
6 years with breeding typically at 2 years
Maximum age from a ringed bird
15 years, 2 months, 27 days (set in 1997)

Survival of adults

All adults
0.795±0.028

Biometrics

Wing length and body weights are from live birds (source).

Wing length

Average ±1 std deviation; range and sample size in brackets.
Juvenile
130.4±3.9 mm
(123-136 mm, N=115)
All adults
131.8±4.1 mm
(125-138 mm, N=1533)

Body weight

Average ±1 std deviation; range and sample size in brackets.
Juvenile
130.4±3.9 mm
(123-136 mm, N=115)
All adults
131.8±4.1 mm
(125-138 mm, N=1533)

Ring Size

B+ or C2

Classification, names and codes

Taxonomy, names and species codes for Purple Sandpiper

Classification and Codes

  • Order: Charadriiformes
  • Family: Scolopacidae
  • Scientific name: Calidris maritima
  • Authority: Brünnich, 1764
  • BTO 2-letter code: PS
  • BTO 5-letter code: PURSA
  • Euring code number: 5100

Alternate species names

  • Catalan: territ fosc
  • Czech: jespák morský
  • Danish: Sortgrå Ryle
  • Dutch: Paarse Strandloper
  • Estonian: merirüdi e. meririsla
  • Finnish: merisirri
  • French: Bécasseau violet
  • Gaelic: Luatharan-rìoghail
  • German: Meerstrandläufer
  • Hungarian: tengeri partfutó
  • Icelandic: Sendlingur
  • Irish: Gobadán Cosbhuí
  • Italian: Piovanello violetto
  • Latvian: juras šnibitis
  • Lithuanian: jurinis begikas
  • Norwegian: Fjæreplytt
  • Polish: biegus morski
  • Portuguese: pilrito-escuro
  • Slovak: pobrežník morský
  • Slovenian: morski prodnik
  • Spanish: Correlimos oscuro
  • Swedish: skärsnäppa
  • Welsh: Pibydd Du
  • English folkname(s): Grollick

Research

Interpretation and scientific publications about Purple Sandpiper from BTO scientists.

Causes of Change and Solutions

Causes of change

A study on the declining Purple Sandpiper population wintering in the Moray Firth in Scotland [Summers et al. 2012] concluded that this decline may be due to poor recruitment into the breeding population (possibly as a result of a decline in productivity in Norway and Canada), but may also be a response to changes in local sewage treatment systems on the Moray affecting food availability or a general reduction in the number of Purple Sandpipers wintering in Scotland. The number of Purple Sandpipers wintering in the UK may also be impacted by climate change, in particular, increasing temperatures [Rehfisch et al. 2004].

Publications (3)

The status of our bird populations: the fifth Birds of Conservation Concern in the United Kingdom, Channel Islands and Isle of Man and second IUCN Red List assessment of extinction risk for Great Britain

Author: Stanbury, A.J., Eaton, M.A., Aebischer, N.J., Balmer, D., Brown, A.F., Douse, A., Lindley, P., McCulloch, N., Noble, D.G. & Win, I.

Published: 2021

Commonly referred to as the UK Red List for birds, this is the fifth review of the status of birds in the UK, Channel Islands and Isle of Man, published in December 2021 as Birds of Conservation Concern 5 (BOCC5). This updates the last assessment in 2015. Using standardised criteria, experts from a range of bird NGOs, including BTO, assessed 245 species with breeding, passage or wintering populations in the UK and assigned each to the Red, Amber or Green Lists of conservation concern. 

01.12.21

Reports Birds of Conservation Concern

Download PDF

Consequences of population change for local abundance and site occupancy of wintering waterbirds

Author: Méndez, V., Gill, J.A., Alves, J.A., Burton, N.H.K. & Davies, R.G.

Published: 2017

Protected sites for birds are typically designated based on the site’s importance for the species that use it. For example, sites may be selected as Special Protection Areas (under the European Union Directive on the Conservation of Wild Birds) if they support more than 1% of a given national or international population of a species or an assemblage of over 20,000 waterbirds or seabirds. However, through the impacts of changing climates, habitat loss and invasive species, the way species use sites may change. As populations increase, abundance at existing sites may go up or new sites may be colonized. Similarly, as populations decrease, abundance at occupied sites may go down, or some sites may be abandoned. Determining how bird populations are spread across protected sites, and how changes in populations may affect this, is essential to making sure that they remain protected in the future.

20.09.17

Papers

More Evidence

More evidence from Conservation Evidence.com

Partners

Birdfacts is based on data collected by volunteers participating in surveys that are organised and funded by BTO, RSPB, Esmée Fairbairn Foundation, JNCC and other partners.
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