Birds Most active at dawn and dusk

Great Stone-curlew

Esacus recurvirostris

iNaturalist Wikipedia

With its massive bill and piercing yellow eyes, the Great Stone-curlew is a striking sentinel of Asia's riverbanks. This masterful hunter of the twilight blends perfectly into the gravel, coming alive under the cover of dusk.

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Quick Identification

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Size

Length of 49–55 cm (19–22 in); weight ranges from 700–1,100 g (1.5–2.4 lbs)

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Colors

Sandy-grey and light brown upperparts with white underparts; distinctive black-and-white facial stripes and a yellow base on a black bill

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Key Features

Massive black-tipped yellow bill with a slight upward tilt
Enormous bright yellow 'goggle' eyes
Black mask and white forehead markings
Long, thick-jointed pale yellow legs

When You’ll See Them

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Activity pattern Most active at dawn and dusk

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Peak hours 5-8 AM, 6-10 PM

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Season Year-round

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Diet Carnivorous specialist focusing on large crustaceans like crabs, as well as mollusks, insects, and occasionally small reptiles or frogs.

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Habitat Open riverbanks, gravel beds, shingle banks, rocky shores, and occasionally coastal lagoons or estuaries.

public Geographic range

Where Does the Great Stone-curlew Live?

This impressive wader is native to the tropical regions of Southern and Southeast Asia. Its core populations thrive across the Indian Subcontinent, including India, Pakistan, Sri Lanka, and Bangladesh, extending eastward into Myanmar, Thailand, and parts of Indochina. While largely restricted to riverine systems in the interior, they are also found along suitable coastal stretches and rocky shorelines throughout their range.

Basemap © OpenStreetMap contributors

10 Countries

4.5M km² Range

Near Threatened Conservation

IN India Pakistan Sri Lanka Bangladesh Myanmar TH Thailand Vietnam Cambodia Laos Nepal

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iNaturalist / Verified observation data

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Behavior

The Great Stone-curlew is a master of stealth and camouflage, often spending its daylight hours standing perfectly still or crouching low among river stones to avoid detection. Despite its large size, its cryptic plumage allows it to blend seamlessly into gravelly environments. It is primarily crepuscular and nocturnal, becoming significantly more vocal and active as the sun sets, when its loud, mournful whistling calls can be heard carrying across the water.

Socially, these birds are typically found in pairs or small family groups, though they may gather in larger loose flocks at particularly rich feeding grounds. They are known for their wary nature and will often run a considerable distance with a hunched posture before taking flight if disturbed. During the breeding season, they are highly territorial of their nesting sites, which are nothing more than simple scrapes in the sand or shingle near water.

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Camera Tips

To capture the Great Stone-curlew on camera, placement is everything. Since these birds are strictly ground-dwellers that prefer wide-open, stony areas near water, your camera should be mounted very low—no more than 12 to 18 inches off the ground. Aim the lens parallel to the substrate to capture their distinctive profile and enormous yellow eyes. If you are placing a camera near a riverbank or a property that borders a wetland, look for 'shingle' or gravel patches where they might rest or forage for crabs.

Because they are crepuscular and nocturnal, ensure your camera has a high-quality infrared (IR) flash that won't spook them. 'No-glow' or 'Black' IR is preferable, as these birds are extremely sensitive to light and movement. Set your trigger speed to the fastest possible setting; while they often stand still, their movements when hunting or striking at prey are lightning-fast. Using a burst mode of 3-5 photos or a short 10-20 second video clip is the best way to catch them in the act of using their powerful bills to crush a crab shell.

You don't necessarily need bait, but maintaining a clear, unobstructed 'runway' of gravel or sand can act as a natural lure. If you live in an area where they are present, avoiding high-frequency human activity near the camera site for several days is crucial, as they will avoid areas with fresh human scent or recent disturbance. During the breeding season (February to June), be extra cautious not to disturb potential nesting sites, as they lay eggs directly on the ground among the stones; always check the area carefully before approaching your camera for maintenance.

Similar Species

Species that look similar or are commonly confused with Great Stone-curlew.

Indian Stone-curlew

Smaller with a shorter, straight bill and lacks the dramatic upturned appearance and sheer size of the Great Stone-curlew.

Beach Stone-curlew

Preferring coastal beaches over riverbanks, it has an even more massive bill and a bolder white patch on the wing coverts.

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Frequently Asked Questions

Great Stone-curlews are primarily crepuscular and nocturnal, meaning they are most active during dawn, dusk, and throughout the night. During the day, they often remain motionless in the shade of rocks or shrubs to stay hidden from predators.

These birds are difficult to attract with food as they don't visit bird feeders. However, if your property borders a river or large pond, maintaining a quiet, sandy, or gravel-covered shoreline without domestic pets or heavy foot traffic will make it more likely for them to visit.

Their diet is heavily focused on animal protein. They use their powerful, thick bills to crush the shells of crabs and mollusks found along water edges. They also eat large insects, worms, and occasionally small vertebrates like frogs or lizards.

They are generally shy birds of wilder riverine habitats, but they can be found in suburban areas that are close to large rivers or coastal estuaries, provided there is enough undisturbed stony ground for them to rest and nest safely.

The Great Stone-curlew is significantly larger and has a much more massive, slightly upturned bill compared to the smaller, straight-billed Indian Stone-curlew. The Great Stone-curlew also lacks the distinct white 'shoulder' patch often seen on the Indian species.

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