Birds diurnal

Greater Adjutant

Leptoptilos dubius

The Greater Adjutant is one of the rarest and most striking storks on Earth, known for its prehistoric appearance and 'military' stride. Once a common sight across Asia, this giant scavenger is now a precious sentinel of our wetlands and urban fringes.

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Quick Identification

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Size

Height: 145–150 cm (4.8–5 ft); Wingspan: 250 cm (8.2 ft); Weight: 8–11 kg (17.6–24.2 lbs)

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Colors

Dark slate-grey wings and back contrast with a pale grey to white underside. The head and neck are mostly bare, showing pinkish, yellow, and orange skin tones. Both sexes look similar, though males are often slightly larger.

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Key Features

Massive wedge-shaped bill
Bare, reddish-pink head and neck
Distinctive inflatable gular (neck) pouch
White ruff at the base of the neck
Stiff, upright 'military' gait

When You’ll See Them

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Activity pattern diurnal

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Peak hours 9:00 AM – 4:00 PM

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Season October–June (Breeding and nesting season)

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Diet Primarily a scavenger eating carrion and offal, but also an opportunistic predator of fish, frogs, reptiles, and small mammals.

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Habitat Wetlands, marshes, and lake edges, but increasingly found near human-dominated landscapes like landfills and agricultural fields.

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Behavior

The Greater Adjutant is a social but stoic scavenger, often observed in small groups or alongside vultures. They are famous for their 'military' gait—a stiff-legged, upright walk that earned them their English name. During the heat of the day, they utilize thermals to soar high in the sky, searching for food sources over vast areas. While generally quiet, they occasionally communicate with loud bill-clattering or low grunting sounds, especially during the breeding season.

In regions where they still thrive, these birds have a complex relationship with humans. Historically viewed as 'unclean' due to their scavenging at landfills and carcasses, they have recently become symbols of conservation pride, particularly in Assam. They are surprisingly tolerant of human presence when not threatened, often nesting in tall trees directly above village houses or foraging on the outskirts of urban centers.

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Camera Tips

Capturing a Greater Adjutant on camera requires planning for their immense scale. Because these birds stand nearly five feet tall, traditional ground-level trail camera setups will likely only capture their legs. Mount your camera at chest height (about 4 to 5 feet) on a sturdy tree or post, and angle the lens slightly downward. This ensures you capture the bird's distinctive head pouch and massive bill in the frame when they walk by.

Location is everything with this rare species. If you are in a region like the Brahmaputra Valley, focus your camera on the edges of large wetlands or open fields where cattle graze. They are drawn to open areas with high visibility. If you are monitoring a known nesting tree, place cameras on nearby branches or opposite structures to capture flight patterns, though you must ensure you do not disturb the nesting site, as these birds are highly sensitive to intrusion during the breeding cycle.

Because Greater Adjutants move with a slow, deliberate pace, you should set your camera's PIR sensor to high sensitivity but keep the trigger interval short. They often travel in pairs or small groups; using a 'burst mode' or 10-second video clips will help you capture the social interactions between individuals. If the camera is near a potential food source, the birds may stand still for long periods, so a timelapse setting during the peak morning hours can also be effective.

Lighting is your best friend when trying to highlight the unique textures of their bare skin and feathers. Since they are diurnal and most active during the brightest parts of the day, position your camera facing North or South to avoid the harsh glare of the East-West sun path. High-resolution settings are recommended to capture the subtle color transitions on their necks, which can range from pale yellow to deep magenta depending on their mood and the season.

Similar Species

Species that look similar or are commonly confused with Greater Adjutant.

Lesser Adjutant

Smaller in size, lacks the inflatable neck pouch, and usually avoids human-dominated areas like landfills.

Marabou Stork

Very similar in appearance and behavior but found exclusively in sub-Saharan Africa rather than Asia.

Painted Stork

Smaller with a bright orange face, yellow down-curved bill, and pink-tinged wing feathers.

Frequently Asked Questions

Greater Adjutant are strictly diurnal. They are most active from mid-morning to late afternoon, roughly 9 AM to 4 PM, when the sun creates the thermal updrafts they need for soaring and searching for food.

Due to their rarity and specific habitat needs, you cannot easily attract them to a typical suburban backyard. They require large open wetlands or proximity to specific nesting trees. Conserving local wetlands and reducing pesticide use are the best ways to support their presence in your area.

They are primarily scavengers that eat carrion and offal, often competing with vultures. However, they are also opportunistic hunters that will eat fish, frogs, large insects, and even small rodents or injured birds.

No, they are critically endangered. While they are occasionally seen on the outskirts of cities like Guwahati (India) near landfills or wetlands, they are generally restricted to very specific protected or community-managed pockets in India and Cambodia.

The Greater Adjutant is significantly larger and possesses a unique, inflatable neck pouch that the Lesser Adjutant lacks. The Greater also has a thicker, more wedge-shaped bill and a distinctive white 'collar' of feathers at the base of its neck.

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