Lesser adjutantLeptoptilos javanicusVar och när du kan se dem

The Lesser Adjutant is a large Asian stork with a bare head and neck, dark upperparts and mostly white underparts. Its scientific name is Leptoptilos javanicus, and its imposing shape should not be confused with the larger Greater Adjutant without checking the details. eBird highlights the relatively slender bill and a frequently more upright posture as useful distinctions. For this River profile, the destination link is strictly Cambodia's Prek Toal colony on Tonle Sap, an optional dedicated wetland excursion via Siem Reap rather than Phnom Penh cruising. The local checklist published on 27 December 2018 explicitly records Lesser Adjutant there. WCS also identifies the species among the significant breeding waterbirds of the great lake's colonies. BirdLife's 2023 update reclassified it from Vulnerable to Near Threatened, reflecting conservation progress without implying that every population is secure. The historical checklist supports occurrence; it does not establish present numbers, guaranteed sightings or a recurring local viewing season.

Storlek

110–120 cm length in Oiseaux-Birds species account

Vikt

About 5 kg in Oiseaux-Birds species account

Livslängd

Species-specific lifespan not verified

Status

See sourced assessment

A Lesser Adjutant can look surprisingly different in flight and at rest. eBird describes broad wings, white armpit patches and a tucked-in neck in the air; standing birds often appear more upright and less hunched than Greater Adjutants. Its bare head and neck also fit a feeding ecology that includes scavenging, although scavenging should not be mistaken for its entire way of life. The BirdForum biology summary describes tree nesting in colonies, sometimes alongside other species, and the construction of stick nests. These general nesting traits do not supply a Prek Toal egg-laying calendar or evidence that every visible large nest belongs to this species. At the Cambodian colony, watch natural arrivals and departures from the approved position and allow a guide to identify occupants. Keep clear of flight paths and never approach branches to make a bird stand up. A resting bird's quiet posture is part of normal observation, not a problem to solve by provoking movement.

• Its scientific name is Leptoptilos javanicus.
• The adult has a bare head and neck.
• Adults show a red face and yellow neck.
• Juveniles have a brownish head and a thinly feathered white neck.
• It tucks its neck in during flight.
• White armpit patches are a useful flight clue.
• Its upperwings are all dark.
• Its diet includes fish as well as carrion.
• BirdLife changed its global category from Vulnerable to Near Threatened in 2023.

No calendar months are highlighted because the researched material does not demonstrate a recurring Lesser Adjutant viewing window specifically at Prek Toal. The 2018 checklist supplies a local occurrence and resident code, but neither establishes that visitors can reliably see the species in all twelve months. The excursion page identifies Lesser Adjutant among its key birds and describes the colony as busiest between December and April. That is colony-wide information, not a Lesser Adjutant seasonal study, so the dates are not transferred into this species' monthly array. WCS's descriptions of nest protection likewise explain conservation work rather than an annual tourist calendar. Before arranging the optional wetland trip, ask a qualified local guide about recent observations, reserve access and water levels for the proposed date. Distinguish general dry-season travel advice from verified species timing, and do not borrow breeding dates from another country or a different Cambodian site. An empty calendar expresses uncertainty rather than absence.

eBird lists shallow marshes, fields and swamps as habitats where Lesser Adjutants are often found. These examples emphasise the importance of wetland margins and feeding ground rather than deep navigation water alone. The broader species literature also describes wooded wetland settings, but that ecological breadth is not used to add unregistered itinerary associations. The River record retained here is Prek Toal on Tonle Sap. Its excursion description identifies seasonally flooded forest and scrub, with changing water levels exposing muddy lakeshore. WCS recognises the great lake's large waterbird breeding colonies as globally important and specifically includes Lesser Adjutant in that context. Suitable trees, food-bearing shallow habitats and protection from disturbance form different parts of the habitat story. Their presence does not automatically make a place legally accessible to visitors. Confirm the actual protected-area route before booking, and treat a day trip from Siem Reap as a separate wetland programme rather than promising birds from a cruise deck near Phnom Penh.

Lesser Adjutants take animal food and are not restricted to scavenging, despite their bare-headed appearance. The BirdForum species summary lists fish as a principal food and also includes frogs, large insects, young birds, lizards and rodents, together with carrion. eBird's identification account explicitly connects the bare head and neck with scavenging habits, providing a useful behavioural context without measuring how frequently each food is taken. These sources describe the species generally; they do not establish the proportions of prey eaten at Prek Toal. Avoid presenting a Cambodian menu or local feeding rate without local evidence. From an authorised viewing position, watch any natural searching, handling or swallowing behaviour without expecting a conspicuous capture on demand. Never use fish or scraps to attract a bird, and never encourage close approaches to feeding individuals. Protecting functioning wetland habitat and allowing birds to forage undisturbed is more valuable than arranging an artificial feeding encounter for a photograph.

Namn

Lesser adjutant

Scientific name

Leptoptilos javanicus

Djur grupp

Birds

Storlek

110–120 cm length in Oiseaux-Birds species account

Vikt

About 5 kg in Oiseaux-Birds species account

Livslängd

Species-specific lifespan not verified

Status

Near Threatened in BirdLife’s 2023 update, downlisted from Vulnerable. The 2018 local checklist and older biology pages retain the superseded Vulnerable label.

Identifiering

An adult Lesser Adjutant has a bare head and neck, a red face and yellow neck, dark upperparts and mostly white underparts. eBird contrasts juveniles, which have a brownish head and a white, thinly feathered neck. In flight, look for broad wings, conspicuous white armpit patches and a retracted neck rather than assuming every stork flies with its neck extended. Greater Adjutant is the important comparison: Lesser has a more slender bill, all-dark upperwings and often a more upright, less hunched stance. None of those features should be used alone when distance or posture is misleading. The Oiseaux-Birds account gives a length of 110–120 centimetres and a weight around five kilograms; these are species reference measurements, not measurements of Cambodian birds. Its older Vulnerable conservation label is superseded here by BirdLife's 2023 Near Threatened update. Use a combination of face, bill, wing pattern and posture, and let a guide assess uncertain birds without approaching nests.