Birds diurnal

Wrybill

Anarhynchus frontalis

The Wrybill is a true New Zealand original, holding the title of the only bird in the world with a beak that always curves to the right. Masterfully camouflaged against river stones, this little plover is a highlight for any backyard observer near the coast or Canterbury rivers.

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Quick Identification

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Size

Length: 20–21 cm (8 in); Weight: 43–71 g (1.5–2.5 oz)

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Colors

Pale grey upperparts, white underparts, and a single black breast band. In breeding season, males have a more prominent black band and a black stripe between the eye and beak.

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Key Features

Beak distinctly curved to the right
Single black breast band (broader in males)
Pale grey plumage that mimics river stones
White forehead and belly

When You’ll See Them

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Activity pattern diurnal

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Peak hours Daylight hours, heavily influenced by low tide for feeding and high tide for roosting.

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Season August–January (South Island rivers); February–July (North Island estuaries)

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Diet Specializes in aquatic invertebrates, particularly mayfly and caddisfly larvae. They use their unique right-curved beak to reach under river stones or sweep through silt.

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Habitat Braided riverbeds during summer breeding; coastal estuaries, mudflats, and salt marshes during the winter.

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Behavior

The Wrybill, or Ngutuparore, is a remarkable strategist. During the breeding season on the braided rivers of the South Island, they are highly territorial, using their perfectly camouflaged plumage to vanish against the grey river stones. They are famous for their 'broken-wing' distraction display, where they feign injury to lead potential predators away from their well-hidden nests on the ground.

Outside of the breeding season, these birds undergo a significant internal migration, flying north to settle in the large estuaries and mudflats of the North Island. In these wintering grounds, they become much more social, often forming large, tight-knit flocks that move in unison. They are relatively approachable compared to other shorebirds but remain constantly focused on the tidal cycle, which dictates their feeding and resting patterns.

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Camera Tips

Capturing the Wrybill on camera requires a strategy focused on low-profile placement. Because these birds are ground-nesters and ground-feeders, your camera should be positioned as low as possible—ideally just a few inches off the ground—to get that intimate, eye-level perspective. On riverbeds, look for flat areas of grey shingle near slow-moving water channels. In estuarine environments, place cameras near known high-tide roosting spots where the birds congregate when the mudflats are submerged.

Since Wrybills are small and blend in perfectly with their surroundings, use a camera with a high-sensitivity PIR (Passive Infrared) sensor. You may need to decrease the detection trigger time to its fastest setting to catch them as they dart across the frame. Because they are diurnal, ensure your camera is optimized for daylight performance; high-resolution video is particularly rewarding for capturing their unique 'sideways' feeding motion, which is one of the most distinctive behaviors in the avian world.

Avoid using food lures, as these birds are specialized feeders. Instead, focus on 'landscape lures' like a slightly elevated driftwood log or a specific patch of fine silt where they might probe for insects. During the breeding season (August to December), be extremely careful not to disturb nesting sites, as their eggs are nearly invisible on the stones. If you are in a coastal backyard near an estuary, a shallow, ground-level birdbath with fresh water can sometimes entice them during the drier winter months.

Similar Species

Species that look similar or are commonly confused with Wrybill.

Double-banded Plover

Has a straight beak and, during breeding season, two distinct bands across the chest (one black, one chestnut) instead of the Wrybill's single black band.

New Zealand Dotterel

Significantly larger with a thicker, straight black beak and often shows a red-orange flush on the breast during breeding.

Frequently Asked Questions

Wrybill are diurnal, meaning they are active during the day. However, their specific activity is governed by the tides in coastal areas; they feed most intensely during low tide and gather in large roosting flocks during high tide.

Wrybill are unlikely to visit traditional bird feeders. However, if you live near a New Zealand estuary or a braided river, maintaining a low-profile, clean water feature at ground level may attract them. Most importantly, keeping pets contained helps create a safe environment for these ground-dwelling birds.

Their diet consists primarily of small invertebrates. In riverbeds, they eat insect larvae (like caddisflies) found under stones. In estuaries, they forage for marine worms, small crustaceans, and mollusks in the soft mud.

They are generally restricted to specific habitats—braided rivers in the South Island and coastal mudflats in the North Island. You will only see them in suburban areas that directly border these specialized ecosystems, such as coastal communities around the Manukau Harbour or Thames.

The easiest way is the beak; the Wrybill’s beak curves to the right, while the Double-banded Plover has a straight beak. Additionally, the Wrybill has only one black breast band, whereas the Double-banded Plover (in breeding plumage) has two distinct bands (one black, one chestnut).

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