Ruddy Turnstone

Species Profile

Ruddy Turnstone

Arenaria interpres

Quick Facts

Conservation

LCLeast Concern

Lifespan

6–9 years[4]

Length

21–24 cm

Weight

85–150 g

Wingspan

43–49 cm

Migration

Long-distance Migrant

An attractive shorebird, frequently seen flipping stones in search of small creatures sheltering beneath. These long-distance migrants visit temperate and tropical coastlines across the globe but return to the Arctic each year to nest.

Also known as: Turnstone

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Gallery

Ruddy Turnstone in non-breeding plumage
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Ruddy Turnstone in non-breeding plumage

Appearance

The Ruddy Turnstone is a small, stocky shorebird with a distinctive patterned plumage. Its breeding plumage features a black-and-white head, rufous and black upperparts, and white underparts. The short, slightly upturned black bill and bright orange legs are key identifying features.

Non-breeding adults have duller plumage, brown upperparts, and a dark breast band. Juveniles resemble non-breeding adults but have buff-edged feathers on their upperparts, giving them a scaly appearance.

In flight, they show bold and contrasting white stripes on the upper wings, down the center of the back, and across the rump.

Identification & Characteristics

Colors

Primary
Black
Secondary
Rufous
Beak
Black
Legs
Orange

Attributes

Agility85/100
Strength60/100
Adaptability90/100
Aggression65/100
Endurance80/100

Habitat & Distribution

Ruddy Turnstones breed in the Arctic tundra of North America, Europe, and Asia. During non-breeding seasons, they are found on coastal areas worldwide, including rocky shores, sandy beaches, and mudflats.

They are common migrants along the coasts of the UK, USA, Canada, and Australia. Some individuals overwinter in these regions, particularly in milder coastal areas.

Distribution

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Diet

Ruddy Turnstones have a varied diet, primarily consisting of invertebrates such as mollusks, crustaceans, and insects. They also consume small fish, carrion, and occasionally bird eggs and even human scraps.

When nesting on the tundra, these birds focus on flies and other small invertebrates but also forage for berries and other plant matter.

Their specialized bill allows them to pry open shellfish and turn over beach debris to find hidden prey.

Behaviour

Ruddy Turnstones are known for their foraging technique, which involves flipping over stones, shells, and debris with their bills to uncover prey. They are often seen in small flocks probing and searching for food along shorelines.

During the breeding season, males perform elaborate courtship displays, including wing-raising and stone-tossing behaviors.

Calls & Sounds

Ruddy Turnstones are fairly vocal birds with a distinctive, rapid-fire call often described as a staccato 'kit-kit-kit' or 'keet-keet-keet'.

During the breeding season, males produce a more melodious warbling song. In flight, they emit sharp, whistling notes that help maintain flock cohesion.

Nesting & Breeding

Ruddy Turnstones form monogamous pairs during the breeding season, typically from May to August in the Arctic. Males perform elaborate courtship displays to attract females.

Nests are shallow scrapes on the ground, often lined with leaves and lichen. Females usually lay 4 olive-green eggs with dark brown spots. Both parents contribute to nest building and egg incubation.

Incubation lasts about 22-24 days, and chicks fledge after 19-21 days. Young birds are precocial and can leave the nest shortly after hatching but remain dependent on their parents for several weeks.

Conservation

While currently listed as Least Concern, Ruddy Turnstones face threats from habitat loss due to coastal development and climate change. 

Conservation efforts focus on protecting key stopover sites along their migration routes and preserving breeding grounds in the Arctic.

LCLeast Concern
[1]

Population

Estimated: 460,000 - 730,000 individuals[3]

Trend: Decreasing[2]

Elevation

Sea level to 1,000 meters

Additional Details

Predators:
Main predators include Arctic foxes, gulls, jaegers, and falcons. Eggs and chicks are particularly vulnerable to predation.

Birdwatching Tips

  • Look for Ruddy Turnstones along rocky coastlines and beaches
  • Observe their distinctive foraging behavior of flipping over objects
  • Listen for their rapid, staccato calls, especially during flight
  • In the UK and US, watch for them during spring and fall migrations along coastal areas

Did You Know?

  1. Ruddy Turnstones can fly at speeds up to 50 mph (80 km/h) during migration.
  2. They have been observed feeding on the eggs of horseshoe crabs during spring migration.
  3. Some individuals have been recorded living for over 20 years in the wild.

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