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Black-necked Stork (Ephippiorhynchus asiaticus)

The Black-necked Stork is a large wetland bird of northern and eastern Australia. It feeds in shallow water and breeds in isolated tall trees standing in or near wetlands. On development sites, clearing, wetland drainage, disturbance near nests and powerline construction can remove habitat or cause direct mortality, especially in New South Wales where the species is Endangered.

Conservation status

New South Wales, Biodiversity Conservation Act 2016: Endangered.

Breeding season

Timing varies across the Australian range. The seasonal pattern below combines the Australian Museum breeding account with the broader account of southern-range breeding and the species' non-migratory behaviour.

Confirm local timing from recent records and pre-clearing surveys because breeding dates differ between parts of the Australian range.

  • Breeding, mating and laying: Breeding is reported from March to May in an Australian account, and May to August in the southern part of the broader range. Both parents incubate the eggs and care for the young.
  • Young in nest or dependent: Young remain in the nest for about 115 days and may remain dependent for about 12 months. Juveniles may stay in their natal territories until about 14 to 18 months.
  • Local movement and dispersal: The species is generally non-migratory. Outside breeding, small family groups may form and may be partially nomadic or remain in the same area. Birds may use estuaries, farm dams and other wetlands when larger wetlands dry.
  • Highest clearing risk: Clearing or disturbance is most likely to harm the species from March to August when breeding, incubation and young in the nest may overlap. Dependent juveniles can remain associated with the natal territory well beyond this period.

Identification

This is Australia's only stork. It is a very large, long-legged waterbird with a distinctive black, white and glossy dark plumage pattern.

Adults have a white body, black head, neck, rump, tail and wing areas, a massive black bill, and long coral-red legs. The neck may show dark green or purple gloss in good light.

The female has a yellow eye. Males have dark brown irises. Immature birds are browner overall, with duller white plumage.

Height: 129 to 137 cm in the Australian Museum account.

Body length: 110 to 137 cm in the broader account.

Weight: Approximately 4 kg.

Wingspan: Approximately 230 cm.

Identification: Telling it from similar birds

The combination of very large size, black neck and head, white body, massive black bill and coral-red legs is distinctive among Australian wetland birds.

It is the only stork found in Australia. Do not confuse it with egrets, herons or ibises, which lack the Black-necked Stork's black-and-white body pattern, very large bill and stork-like proportions.

Identification: Field signs

The main breeding sign is a large platform nest made from sticks and other vegetation. Nests are placed in the canopy of a tall tree standing in or near water, often in an isolated position.

Adults may give guttural grunts and clack or snap the bill. Breeding birds can be secretive and territorial, so a nest may be easier to detect from repeated adult flights, bill clacking or defensive behaviour than from a close approach.

  • Record the location of any large stick platform in a tree within or beside a wetland.
  • Keep observers and machinery away from suspected nest trees until a qualified ecologist has assessed whether the nest is active.
  • Do not rely on tracks, scats, hollows, burrows or eyeshine for this species. These are not useful primary field signs in the supplied sources.

Distribution: Australian range

The species occurs across northern and eastern Australia, with its Australian range concentrated in coastal and near-coastal areas. The supplied sources do not provide a complete state or IBRA bioregion distribution list, so site records and current atlas data should be checked for project assessments.

The Black-necked Stork is mainly distributed through coastal and near-coastal northern and eastern Australia. It remains widespread in the monsoonal parts of northern Australia, with fewer birds southwards in eastern Australia.

In New South Wales, the range extends from northern coastal wetlands and the Hunter region to lowland wetlands north of Sydney, with some records west of the Great Dividing Range near Moree.

  • For a development assessment, check wetlands, floodplains, farm dams, estuaries and flooded paddocks within the wider project area, not only the construction footprint.
  • Use recent local records and targeted searches because the supplied sources do not map the species by every Australian state or bioregion.

Distribution: Strongholds and subpopulations

Important Australian areas include the monsoonal north and the wetland systems of coastal and near-coastal eastern Australia. In New South Wales, the Northern Rivers, mid-north coast and northern Hunter regions support the main breeding population described in the supplied study.

The NSW population is concentrated in territories associated with freshwater swamps, open freshwater and other productive wetland areas. Breeding pairs are widely spaced, commonly by at least 6 km between nests in the reported NSW sample.

Estimated NSW population: At least 71 breeding pairs and about 81 territories in 2004, with about 170 to 180 birds when non-territorial adults and young were included.

NSW breeding records: Thirty nests were recorded in 2000 to 2006, with up to about 50 additional pairs estimated.

Australian and New Guinean population: About 30,000 birds were estimated, mostly in Australia, with more than 1,000 in New Guinea.

Population trend: Australian populations were described as stable in the supplied account. NSW numbers and territories appeared reasonably stable, although the species remains vulnerable at the southern edge of its range.

Distribution: Elevation and occurrence context

The reported global elevation range is 0 to 1,200 m. Australian records are strongly associated with lowland wetlands, floodplains and coastal or near-coastal areas.

Habitat: Wetland types

Black-necked Storks use freshwater and estuarine wetland systems with open shallow water, nearby deeper water and suitable trees for nesting. They may also use modified rural wetlands when food remains available.

Suitable habitat includes river floodplains, large shallow swamps, pools, permanent waterbodies, freshwater marshes, large rivers, mangroves, flooded grasslands, flooded agricultural fields and farm dams.

The species may move between large wetlands, estuaries and smaller artificial waterbodies when water levels change or larger wetlands dry.

  • Inspect all wetland habitat within and adjacent to the project area, including seasonal depressions, farm dams, drainage lines, floodplain pools and flooded paddocks.
  • Map both feeding water and nearby trees that could support a nest, rather than assessing open water in isolation.

Habitat: Structural features

Preferred sites contain open or shallow water where a large bird can wade and see prey, together with isolated tall trees in or near water for nesting.

Large freshwater swamps and open freshwater are important NSW habitats. Tall reed beds and floodplain vegetation have also been affected by historical modification, although the species can use open wetlands and some farm dams.

Reported territory size in NSW: About 8,000 to 12,000 ha, probably determined by feeding sites and food supply.

Nest spacing in NSW: Some nests were about 2 to 3 km apart, but most were at least 6 km apart.

Foraging habitat: Diet

The Black-necked Stork is a generalist carnivore that hunts mainly in shallow water. It usually forages alone or in pairs and depends on productive wetlands across a large territory.

Recorded prey includes fish, frogs, aquatic insects, crustaceans, molluscs, snakes and waterbirds. The species is also described as taking reptiles and other aquatic animals.

It has no identified food plant requirement. Food availability is linked to wetland condition, water levels and the presence of aquatic prey.

Foraging habitat: Foraging method and places

The bird commonly stands still in water up to about 35 cm deep and ambushes prey that swims nearby. It seizes prey with its large bill, and may also jab, lunge with a long stride or leap into the air.

Foraging habitat includes shallow swamps and pools, floodplain waterbodies, permanent water, estuaries during dry periods, flooded paddocks and farm dams.

Typical foraging depth: Up to about 35 cm of water.

Reported NSW territory size: About 8,000 to 12,000 ha.

  • Retain shallow feeding margins, open water, wetland connections and nearby refuge vegetation during works.
  • Avoid sediment, pollution and hydrology changes that reduce shallow water or aquatic prey availability.
  • Assess the wider wetland system because a breeding territory may cover about 8,000 to 12,000 ha in NSW.

Breeding habitat: Breeding biology

Breeding pairs are territorial and nest in isolated trees standing in or near wetlands. Both adults build the nest, incubate the eggs and care for the young.

Pairs may bond for several years or possibly for life. Courtship and pair displays include bowing, wing movements and bill clapping. Breeding birds are secretive and defend the nest area.

The nest is a large platform of sticks and other vegetation in the canopy of a tall tree. Both parents incubate the eggs and care for the young.

Breeding season: March to May in the Australian Museum account; May to August is reported for the southern part of the broader range.

Clutch size: Two to four eggs.

Incubation: The supplied sources do not give a confirmed species-specific incubation period. One account estimates about 30 days from comparison with another stork species.

Time in nest: About 115 days.

Age at maturity: Not stated in the supplied sources.

Time to independence: About 12 months in the broader account. Juveniles may remain in their natal territory until about 14 to 18 months.

Lifespan: The longest recorded captive lifespan was 34 years. Wild birds may live for about 30 years, although wild longevity is poorly known.

  • Treat a suspected nest tree and the wetland around it as potentially sensitive until breeding activity has been assessed.
  • Check for breeding activity before clearing, tree removal, noisy works, piling, blasting or major hydrology changes.
  • Maintain access to feeding wetlands during the breeding period because adults must provision young over an extended development period.

Breeding habitat: Nest habitat

Breeding habitat combines an isolated tall tree in or near water with access to shallow feeding areas and a larger wetland territory. Nest trees may occur in floodplains, large swamps, pools and other permanent or semi-permanent wetland settings.

Pairs are territorial and widely spaced. Removal of a nest tree, loss of nearby feeding habitat or repeated disturbance can affect breeding even when the nest itself is outside the construction footprint.

Sheltering habitat: Nest and refuge structures

The supplied sources describe nesting and use of natal territories, but provide little information about separate roosting sites. The main shelter and breeding structure to protect is the tall nest tree and its surrounding wetland.

Adults build large stick platforms in the canopy of tall trees standing in or near water. These trees may be isolated within open wetland areas.

Young remain in the nest for about 115 days and may stay within the natal territory for 14 to 18 months. Nearby wetland habitat therefore supports both breeding and post-fledging refuge.

Nest type: Large platform of sticks and other vegetation.

Nest position: Canopy of a tall tree standing in or near water.

Nest dimensions: An average of about 109.3 cm diameter and 133.84 cm deep is reported in the broader account.

  • Retain tall trees in or beside wetlands, including trees that appear isolated from other woodland.
  • Inspect large stick platforms before tree clearing or trimming.
  • Protect the wetland and access routes around a nest tree, not only the tree trunk and canopy.

Sheltering habitat: Other shelter sites

The supplied documents do not identify species-specific hollows, burrows, dens, caves, roost dimensions or ground-cover requirements. The species is described as nesting in trees and remaining near wetlands rather than using underground refuges.

  • Do not assume that the absence of a visible nest means the wetland is unused, particularly outside the breeding period.
  • Record nearby trees, open water, reed beds and wetland margins as potential daytime refuge and feeding habitat during site inspections.

Threats: Clearing and wetland change

The main development risks are wetland loss or hydrology change, removal of nest trees, disturbance near breeding sites and collision with powerlines. The species is Endangered in New South Wales because its small state population remains exposed to these threats.

Historical modification of floodplains and tall reed beds for agriculture, mining and settlement has reduced the species' former range in eastern New South Wales.

Draining or filling wetlands, changing inundation timing, reducing shallow water and removing floodplain trees can reduce both feeding and breeding habitat. Water levels that become too low can cause nesting sites to be abandoned.

  • Avoid clearing wetland vegetation, floodplain trees and isolated trees standing in or beside water.
  • Maintain natural water levels and wetland connections where practicable.
  • Assess indirect effects from roads, drainage, spoil placement, groundwater changes and construction dewatering.

Threats: Powerlines, roads and construction

Collision with powerlines is the most commonly identified cause of death in the NSW mortality records. Thirty-four birds were known to have died from powerline collision since 1975, out of 69 recorded deaths since 1839.

New powerlines, tall structures and altered flight paths near wetlands can increase collision risk. The supplied sources do not quantify road mortality, but roads and construction activity can disturb wetland access and increase local movement hazards.

Recorded powerline deaths in NSW: 34 birds since 1975.

Total recorded NSW deaths in the cited dataset: 69 birds since 1839.

  • Identify flight paths between nest trees, feeding wetlands and nearby waterbodies before installing powerlines or tall infrastructure.
  • Use design and marking measures where overhead wires cannot be avoided near known stork habitat.
  • Keep vehicles, plant and people away from active nests and feeding margins during breeding and dependent-young periods.

Threats: Other pressures

Other reported threats include agricultural encroachment, overfishing, egg stealing, habitat deterioration and human settlement. Predation by jungle cats and large eagles is reported, but the supplied Australian sources do not identify predation as the main development pressure.

The species has been recorded entangled in plastic debris in Australian waters. The cited record identifies one Black-necked Stork entanglement, so waste management is relevant near waterways and coastal wetlands.

Disease is not identified as a major field threat in the supplied Australian material. Captive birds have carried trematode parasites, but no project-specific disease pathway is provided.

  • Prevent plastic, cable, netting, fencing and other loose materials from entering wetlands or becoming entanglement hazards.
  • Keep food waste and construction waste out of wetland habitat to avoid attracting predators and changing animal behaviour.
  • Use fauna spotter catchers and ecologists to assess active nests, injured birds and entanglement incidents before handling or relocation.

Survey methodology: 1. Map and inspect wetland habitat

Survey Black-necked Storks in and around shallow wetlands, floodplains, open water, flooded paddocks and nearby nesting trees. The species is diurnal, territorial and often solitary, so daytime visual searches from suitable vantage points are the primary method.

Before field searches, map floodplains, shallow swamps, pools, permanent water, flooded paddocks, farm dams, estuaries and isolated large trees in or near water.

Inspect habitat within and around the proposed disturbance area because Black-necked Storks may forage in wetlands and use nearby trees for nesting.

Record water depth, open feeding areas, emergent vegetation, isolated trees, access tracks, powerlines and potential flight paths.

Typical foraging depth: Up to about 35 cm

Known territory size in NSW: About 8,000 to 12,000 hectares

  • Complete searches during daylight, when the species is active and feeding.
  • Give particular attention to water up to about 35 cm deep, where the species commonly forages.
  • Search during wet and dry conditions where practicable because the species may move between large wetlands, farm dams and estuaries as water levels change.

Survey methodology: 2. Conduct daytime vantage-point searches

Use elevated or concealed vantage points around wetlands and open water to scan for adults, immature birds, pairs and family groups without approaching nest trees.

Search from several points where vegetation, terrain or the works footprint creates blind areas, and record the time spent and area visible from each point.

Record all sightings with coordinates, flock or group size, age class, behaviour, flight direction, feeding location and distance from the proposed works.

Daily activity: Diurnal

Social behaviour: Usually solitary and territorial, with small family groups sometimes seen outside the breeding season

  • Schedule searches in daylight and include periods when the wetland is likely to be used for feeding.
  • Use binoculars or a spotting scope to avoid close approach to birds and nest sites.
  • Repeat searches across the relevant breeding and non-breeding periods where the project could affect wetland habitat or movement routes.
  • Treat absence from one visit as inconclusive, particularly where water levels, weather or visibility are poor.

Survey methodology: 3. Search for nests and breeding activity

Inspect tall trees standing in or near water for large stick platforms, adult activity, repeated flights to a tree, bill clacking, defensive behaviour and recently fledged young.

Keep observers and equipment away from nest trees and use optics from a distance. Do not climb nest trees or approach a nest to obtain photographs or measurements.

Record the nest location, tree species if known, tree condition, distance to the proposed disturbance, nearby water, access routes and any powerlines or other collision hazards.

Breeding period reported in the sources: March to May in the Australian Museum account; May to August for the southern extent of the range in Animal Diversity Web

Clutch size: 2 to 4 eggs

Time in nest: About 115 days

Nest setting: A large platform of sticks and vegetation in a tall tree standing in or near water

  • Time breeding searches to cover the locally relevant breeding period, noting that the supplied sources report March to May for Australia and May to August for the southern extent of the range.
  • Continue to inspect for dependent young after fledging because young may remain associated with the natal territory for many months.
  • Map nearby potential nesting trees even when no nest is occupied during the survey.

Survey methodology: 4. Record habitat use and movement

Conduct repeated observations at wetlands, feeding areas, nest trees and likely flight paths where clearing, cranes, powerlines, roads or tall structures may alter access or create collision hazards.

Record flight direction, height where it can be estimated, landing and take-off points, feeding areas, roost or family-group locations and responses to people or machinery.

Check adjacent retained habitat because NSW territories can be large and suitable feeding and breeding areas may extend well beyond the development boundary.

Observed NSW territory scale: About 8,000 to 12,000 hectares

Typical nest spacing reported for some pairs: About 2 to 3 km in some areas, with most nests at least 6 km apart

  • Use the same observation points and recording fields on repeat visits so changes can be compared.
  • Record water levels and recent flooding or drying at every visit.
  • Document survey dates, start and finish times, weather, visibility, observers, equipment, areas searched and any limitations.

Survey methodology: Minimum effort and reporting

  • Use a project-specific survey design that covers all suitable wetlands, nearby nesting trees and likely movement routes, because the supplied documents do not prescribe a standard number of visits, transect length, survey hours or trap nights for this species.
  • Repeat surveys when water levels, access, weather or visibility have limited detection, and include the relevant breeding period where works could affect nesting or dependent young.
  • Do not use trapping as a routine method for this large wetland bird; rely on non-invasive daylight observation unless a wildlife authority approves another method.
  • Submit confirmed records, including negative survey results where required, to the relevant state wildlife or threatened-species database and provide records to the project approval authority.
  • Report coordinates, date, time, observer, effort, behaviour, breeding evidence, habitat condition, photographs where suitable and the source of identification.
  • Record the species as *Ephippiorhynchus asiaticus* and note that it is listed as Endangered in New South Wales and is not listed under the EPBC Act in the supplied project information.

Before habitat disturbance: Avoid and minimise habitat loss

Plan the project around the species' dependence on wetlands, shallow open water and tall trees near water. Avoid removing or isolating feeding and nesting habitat, especially in the small NSW population at the southern edge of the range.

Known NSW mortality: 34 of 69 recorded deaths since 1839 were attributed to powerline collision

Main habitat types: Floodplains, shallow swamps and pools, deeper permanent water, estuaries and flooded paddocks

  • Retain wetlands, floodplains, shallow swamps, permanent pools, estuaries, flooded paddocks and farm dams that provide feeding habitat.
  • Retain tall isolated trees and other large trees standing in or near water, including trees without a visible nest.
  • Keep retained wetlands connected to nearby feeding areas, nesting trees and other suitable wetlands by avoiding unnecessary fencing, roads, stockpiles and permanent barriers.
  • Avoid works that drain, fill, heavily shade or substantially alter water depth in feeding areas.
  • Locate new powerlines and other tall structures away from known flight paths, nest trees and wetland approaches where practicable, because powerline collision is a documented cause of death in NSW.

Before habitat disturbance: Confirm approvals and timing

NSW status: Endangered

EPBC status in the supplied project information: Not listed

  • Confirm the EPBC Act position before works begin, noting that the supplied project information states the species is not nationally listed.
  • Check the relevant state threatened-species legislation, permits and consent conditions, particularly in New South Wales where the species is listed as Endangered.
  • Obtain approval for handling, possession, rehabilitation or relocation from the relevant wildlife authority before works start.
  • Schedule vegetation clearing, wetland alteration and high-noise works outside the locally relevant breeding period where practicable, noting that the supplied sources report March to May and May to August for Australian populations.
  • Prepare a fauna management plan that identifies habitat, survey results, exclusion zones, stop-work triggers, authorised personnel, wildlife care arrangements and reporting requirements.

Before habitat disturbance: Prepare the site

  • Complete the pre-clearance survey shortly before works and recheck wetlands, nest trees, feeding areas and flight paths if conditions or the work footprint change.
  • Mark no-go areas around retained wetlands, nest trees, potential nesting trees, access routes and other habitat features identified by the ecologist.
  • Install exclusion fencing where it can protect retained wetland margins or nest habitat without blocking access between feeding areas.
  • Brief machinery operators and all contractors on the species' appearance, the exclusion zones, the fauna spotter catcher's authority and the stop-work procedure.
  • Provide a quiet holding and release plan for any bird that must be moved, and confirm the contact details of an authorised wildlife carer or veterinarian before clearing.

During habitat disturbance: Daily work controls

Use active supervision whenever works are near wetlands, nest trees or flight paths. The fauna spotter catcher must be able to stop machinery immediately and must remain in communication with the operator.

  • Inspect exclusion fencing, wetland buffers, access routes and nest-tree protection before work starts each day.
  • Keep machinery, vehicles, workers and stockpiles outside marked habitat exclusion zones unless the approved method specifically allows access.
  • Use a fauna spotter catcher during clearing and other activities that could disturb a bird, nest, feeding area or movement route.
  • Maintain radio or direct visual communication between the spotter catcher and each machine operator.
  • Stop or slow work when visibility is reduced by dust, fog, heavy rain, glare or vegetation movement and the spotter catcher cannot safely inspect the work area.
  • Prevent workers from feeding, chasing, photographing at close range or otherwise approaching the bird.

During habitat disturbance: Fauna spotter catcher and machinery

  • Inspect the active work area, adjoining wetland edge, trees and likely flight path before each new clearing section or machine movement.
  • Direct the operator to stop before a bird enters the work area, approaches a nest tree or cannot be tracked safely.
  • Clear progressively in small sections so the spotter catcher can inspect the next area before machinery advances.
  • Do not push a bird towards open water, a road, powerlines, a nest tree or an area that has not been checked.
  • Keep the machine stationary until the spotter catcher confirms that the bird has moved to safe retained habitat or that an authorised handler has taken control.
  • Record the machine, location, time, bird response and any change to the approved method after each incident.

During habitat disturbance: Wildlife handling and stop-work response

  • If a Black-necked Stork is found, stop the relevant work and allow the bird to move away naturally before considering capture.
  • Only an appropriately authorised and experienced person may capture, handle or relocate the bird, and handling should be avoided unless the animal is injured, trapped or at immediate risk.
  • Use nearby retained wetland habitat for relocation only when relocation is lawful, necessary and directed by the relevant wildlife authority or fauna management plan.
  • Keep people, vehicles and dogs away from the bird and do not corner it in shallow water or dense vegetation.
  • Stop work immediately if a nest, eggs, dependent young, injured bird, trapped bird or repeated defensive behaviour is detected.
  • Take injured birds to an authorised wildlife carer or veterinarian as soon as practicable, using the approved wildlife rescue pathway.
  • Recommence work only after the fauna spotter catcher and ecologist have assessed the situation, applied any required buffer and documented the decision.

During habitat disturbance: Habitat feature and wetland protection

  • Treat tall trees in or near water as potential nest trees even when no nest is visible.
  • Do not remove, disturb or use heavy machinery beneath a tree containing a nest or repeated breeding activity unless the approval explicitly permits it and the ecologist confirms the controls.
  • Prevent sediment, fuel, concrete washout, spoil and rubbish from entering wetlands, shallow pools or drainage lines used for feeding.
  • Maintain open access to retained shallow water and avoid creating steep edges, entrapment points or sudden changes in water level.
  • Inspect for birds after flooding, wetland drawdown, vegetation slashing or changes to access because these events can alter feeding locations.

After habitat disturbance: Post-clearance checks

Check that retained habitat remains usable and that the works have not displaced birds from feeding or nesting areas. Continue controls until the site is stable and the approval conditions are met.

  • Inspect the cleared area, wetland margins, retained trees, exclusion fencing and access routes at the end of each clearing stage.
  • Check for injured, trapped or displaced birds, damaged nests, fallen nest material, blocked wetland connections and new collision hazards.
  • Confirm that no spoil, waste, sediment or machinery has entered retained wetland habitat.
  • Remove temporary fencing only after the fauna management plan and approval conditions allow it, and retain permanent barriers that protect habitat without blocking bird movement.

After habitat disturbance: Monitor retained habitat and use

Key monitoring locations: Wetlands, shallow feeding areas, nest trees, flight paths and retained habitat connected to the work area

  • Repeat daytime observations at affected wetlands and known nest or feeding areas during construction and after the site becomes operational.
  • Record changes in water depth, open feeding area, vegetation cover, bird presence, breeding behaviour, flight paths and responses to noise or lighting.
  • Investigate any decline in use, repeated alarm behaviour, nest abandonment, collision or injury and refer the result to the project ecologist and approval authority.
  • Continue monitoring for the period specified in the approval or fauna management plan, with additional visits after major flooding, drying or changes to wetland operation.

After habitat disturbance: Report and manage residual impacts

  • Submit required fauna records, incident reports, nest records, injury reports and monitoring results to the relevant state wildlife database and approval authority.
  • Report any unauthorised clearing, wetland damage, bird death, nest disturbance or failure of an exclusion control under the project's incident procedure.
  • Maintain any required buffers, fencing, wetland protections, collision controls and access restrictions for the full approval period.
  • Implement approved offsets or other compensatory measures where impacts cannot be avoided and an approval requires them.
  • Update the fauna management plan when monitoring shows that the original controls are not protecting feeding, nesting or movement habitat.

Rehabilitation actions: Restore wetland feeding habitat

Rehabilitation should restore shallow wetland feeding areas and retain safe links between water, nesting trees and adjoining habitat. The target is functional habitat used by Black-necked Storks, not simply revegetation cover.

Foraging depth to accommodate: Up to about 35 cm

Diet to support through habitat restoration: Fish, frogs, waterbirds, snakes, aquatic insects, crustaceans and mollusks

  • Reinstate shallow open water, floodplain depressions, pools and wetland margins where they were temporarily disturbed.
  • Design drainage and wetland edges to provide shallow feeding water, noting that the species commonly forages in water up to about 35 cm deep.
  • Use locally appropriate native wetland and floodplain plants that support fish, frogs, aquatic insects, crustaceans and other prey, while retaining open areas for wading.
  • Prevent weeds, excessive reed or shrub cover and sediment accumulation from removing the open shallow-water areas used for feeding.
  • Avoid permanent lighting, fencing, stockpiles and access tracks that divide retained wetlands or obstruct movement between feeding areas and nesting trees.

Rehabilitation actions: Protect nesting and movement habitat

Known nest structure: A large platform of sticks and vegetation in a tall tree standing in or near water

  • Retain existing tall trees standing in or near water and protect them from root damage, compaction, fire and changes to local drainage.
  • Replace lost nest opportunities only where supported by the fauna management plan and advice from the relevant wildlife authority, using appropriately designed large nest platforms or nest structures rather than small generic boxes.
  • Keep nest structures away from powerlines, roads and high-use work areas, and place them where birds have clear access to water and safe approach routes.
  • Reinstate connected wetland and floodplain vegetation between retained feeding areas and nesting trees.
  • Do not place logs, rocks, artificial structures or dense plantings where they obstruct shallow-water feeding or create collision hazards.

Rehabilitation actions: Control weeds, predators and fire impacts

  • Control invasive plants that reduce open shallow water, obscure feeding areas or prevent access between wetlands and nesting trees.
  • Manage construction waste and food sources so they do not attract dogs, foxes or other predators to wetland and nesting areas.
  • Prepare fire management that protects retained nest trees, wetland margins and regenerating vegetation while avoiding inappropriate dense regrowth in open feeding areas.
  • Use erosion and sediment controls until rehabilitated areas are stable and water quality is suitable for aquatic prey.
  • Avoid broad disturbance during the breeding period where practicable, and inspect restored habitat for breeding activity before maintenance works.

Rehabilitation actions: Measure rehabilitation success

  • Monitor plant establishment, weed cover, water depth, water quality, wetland connectivity, nest-tree condition and the availability of open shallow feeding areas.
  • Use repeat daytime observations to record Black-necked Stork presence, feeding, flight paths, territorial behaviour, nesting attempts and use by family groups.
  • Set project-specific success measures before rehabilitation starts, because the supplied documents do not provide standard restoration thresholds or monitoring durations.
  • Investigate and correct failed drainage, excessive vegetation growth, weed invasion, predator activity, fencing barriers or new collision hazards.
  • Provide rehabilitation results and species records to the relevant state wildlife database and approval authority where required.

Sources