Greater adjutantLeptoptilos dubiusWhere and when to see them

The greater adjutant is an enormous Asian stork with a bare head, heavy bill and conspicuous hanging throat pouch. Once widespread across South and Southeast Asian floodplains, it now survives principally in India and Cambodia. Its scavenging habits provide an important ecological service, but wetland loss, nesting-tree removal and persecution have greatly reduced its range. In Vietnam it is an exceptionally rare prospect, not a dependable coastal bird.

Size

120–150 cm tall

Weight

5–8 kg

Lifespan

Not reliably established

Status

Check current assessment

Greater adjutants alternate between slow, deliberate feeding walks and soaring flights that exploit rising warm air. They gather where food is concentrated and may breed colonially in very tall trees. Adults carry material to bulky stick nests and share parental duties. Although often associated with refuse, they also search natural wetlands for animal prey. Their bare necks help limit feather fouling when reaching into carcasses or muddy feeding sites. Courtship displays involve bill-clattering and neck-stretching rituals, often performed near the nest site. They are long-lived birds, with individuals potentially surviving for several decades in the wild. These storks often roost communally in tall trees, particularly during non-breeding periods, for safety and social interaction.

• Its English name refers to the stiff, military-looking way it stands and walks.
• The hanging throat pouch is not a container for carrying fish to chicks.
• Like other storks, it can cool itself by excreting onto its legs.
• Community protection of nesting trees in Assam has become important to its conservation.

Wildlife opportunities depend on the river reach, water levels and species. River-specific viewing months have not been confirmed; general species seasons are not a local sighting forecast.

Natural habitats include seasonally flooded grassland, freshwater marshes, shallow lakes and broad river floodplains. Large nesting trees must stand within travelling distance of feeding grounds. Remaining populations also use rubbish dumps, but apparently suitable Vietnamese wetlands should not be treated as evidence of current occupation. Historically, this species occupied a vast range across South and Southeast Asia, but habitat loss and disturbance have severely restricted its current distribution. In Vietnam, only a few remaining suitable wetland complexes and adjacent forests support the species, primarily in the Mekong Delta region. Restoration efforts in some areas aim to recreate the mosaic of aquatic and terrestrial habitats essential for their survival.

This stork takes fish, frogs, reptiles and other small animals, alongside carrion and discarded animal material. Its massive bill handles relatively large food items. Feeding opportunities shift with flood levels, drying pools and human waste availability rather than following a single narrow prey specialization. Young adjutants are fed a diet primarily consisting of fish, which their parents regurgitate. They are opportunistic scavengers and predators, often outcompeting smaller storks or birds for food items. Their feeding strategy, combining active hunting with scavenging, allows them to exploit a wide array of food sources in dynamic wetland environments.

Common name

Greater adjutant

Scientific name

Leptoptilos dubius

Animal group

Birds

Size

120–150 cm tall

Weight

5–8 kg

Lifespan

Not reliably established

Status

Check current assessment

Identification

Compared with the lesser adjutant, it is larger and heavier-billed, with a conspicuous pendulous throat pouch and a paler panel across the upperwing. Beyond size and bill characteristics, the Greater Adjutant's distinctive bare head and neck often display shades of reddish-orange or yellowish skin. Juveniles initially lack the prominent throat pouch and have duller plumage, developing adult characteristics over several years. Their immense size and distinctive flight profile with slow, powerful wingbeats make them unmistakable once familiar.