Species Profile
Purple Sandpiper
Calidris maritima
Quick Facts
Conservation
LCLeast ConcernAlso known as: Rock Sandpiper
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Appearance
The Purple Sandpiper is a stocky shorebird with distinctive dark grey plumage that takes on a purplish sheen in the breeding season. It has a slightly decurved bill that is orange at the base, dark at the tip, and short orange-yellow legs.
In winter, its plumage becomes duller. Juveniles resemble non-breeding adults but have buff-edged feathers on the upperparts, giving them a scaly appearance.
Males and females are alike in coloring, although females tend to be slightly larger, with longer bills. Despite their colorful name, a vibrant purple plumage is not a distinguishing feature of this chunky shorebird
Identification & Characteristics
Colors
- Primary
- Grey
- Secondary
- White
- Beak
- Orange
- Legs
- Orange
Attributes
Understanding Attributes
Rated 0–100 based on research and observation. A score of 50 is average across all bird species. These attributes are relative and don't necessarily indicate superiority.
Habitat & Distribution
Purple Sandpipers inhabit rocky coastal areas, particularly those with algae-covered rocks and strong wave action. They breed in the high Arctic tundra of North America and Eurasia.
During winter, they migrate to rocky coastlines in northern Europe and northeastern North America.
In the UK, they are regular winter visitors along the eastern and northern coasts, including Scotland and Northern Ireland.
Distribution
Where to See This Bird
Explore regional guides for locations where this bird has been recorded.
Diet
Purple Sandpipers primarily feed on marine invertebrates found on rocky shores. Their diet includes mollusks, crustaceans, and marine worms. They also consume some plant material, including algae and seeds.
Their slightly curved bill is well-adapted for probing between rocks and in crevices for food.
Behaviour
Purple Sandpipers are remarkably hardy, often seen foraging on wave-battered rocky shores where other shorebirds rarely venture. They feed by picking invertebrates from rocks, occasionally probing into crevices.
During high tides, they roost in tight groups on elevated rocky outcrops.
Calls & Sounds
Purple Sandpipers have a distinctive low-pitched call, often described as a soft 'weet' or 'tweet'.
During the breeding season, males produce a melodious trill as part of their display flight, sounding like 'trrrrrr-weet-weet-weet'. In flight, they may give a rapid series of 'wit-wit-wit' notes.
Nesting & Breeding
Purple Sandpipers breed in the high Arctic tundra, typically from June to August. Males perform aerial displays to attract females, flying in wide circles while calling.
Nests are simple scrapes on the ground, often near rocks or vegetation. Females typically lay 4 olive-green eggs with brown spots. Both parents share incubation duties.
The incubation period lasts about 21-22 days. Chicks are precocial, leaving the nest soon after hatching, and fledge after 21-28 days.
Conservation
While currently listed as Least Concern, Purple Sandpipers face threats from climate change and coastal development. Their specialized habitat requirements make them vulnerable to sea-level rise and changes in coastal ecosystems.
Conservation efforts focus on protecting key wintering and breeding sites.
Elevation
Sea level to 300 meters
Additional Details
- Predators:
- Main predators include Arctic foxes, gulls, and jaegers on breeding grounds. Peregrine falcons and other raptors may prey on them during migration and in wintering areas.
Birdwatching Tips
- Look for them on rocky coastlines, especially during the winter months
- Observe their unique ability to feed among crashing waves
- Listen for their distinctive, low-pitched 'weet' call
- In the UK, check popular sites like the Farne Islands or Scottish coasts
Did You Know?
- Purple Sandpipers have special blood vessels in their legs that help them conserve heat in cold waters.
- They are one of the northernmost wintering shorebirds in the Northern Hemisphere.
- Some individuals return to the same wintering sites year after year.
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