Speckled Brown Snake (Pseudonaja guttata)

Conservation status

South Australia, National Parks and Wildlife Act 1972: Rare.

Breeding season

The Speckled Brown Snake is an Australian egg-laying snake, but its breeding months and regional timing are poorly known. Treat breeding activity and eggs as possible throughout the year, with local conditions and hot weather affecting when snakes are encountered.

Breeding mode: Oviparous, lays eggs.

Clutch size: Small clutches, averaging six eggs.

Incubation: Not recorded.

Fledging or weaning: Not applicable. Young hatch from eggs.

Age at maturity: Not recorded.

Breeding sites: Not recorded. No specific nest, shelter or breeding place type has been identified.

Breeding frequency: Not recorded.

Activity and breeding encounters may vary between years and regions, particularly across the species range in Queensland, the Northern Territory and extreme north-eastern South Australia.

• Breeding and egg laying: No reliable monthly breeding peak is established, so eggs and breeding snakes should be considered possible in every month.
• Eggs and newly hatched young: The timing of egg incubation and hatching is not established, so avoid assuming that a site is free of eggs or young outside a particular season.
• Surface activity: Adults are primarily diurnal and may become crepuscular or nocturnal during hot weather.
• Possible hot-weather activity shift: In hot conditions, schedule searches across suitable daytime, crepuscular and nocturnal periods where site risks and project controls allow.
• Highest clearing risk: Because breeding timing and breeding places are poorly known, clearing risk should be managed year round, with pre-clearance checks and fauna spotter catcher controls.

Identification: Appearance and size

The Speckled Brown Snake is a variable-looking brown snake with a slender body and a strongly defensive posture when threatened. Treat every unidentified brown snake on site as potentially venomous until it has been safely identified by a competent person.

The upper surface ranges from pale fawn or orange-brown to grey-brown. Dark cross-bands, blotches or fine speckling may be present.

The belly is yellow, creamy orange or bright orange, often with orange spots. Some individuals have a black band across the white throat.

Adults are commonly about 50 cm long. The recorded maximum is 80 cm, with occasional records to 1.4 m.

Identification: Defensive behaviour and handling

When threatened, the snake may raise the front of its body, form an S shape and spread the neck in a hooded stance. This behaviour is a warning, not a sign that the animal is safe to approach.

Keep workers and machinery clear. Use a trained fauna spotter catcher for any capture or relocation, and follow the approved site procedure for venomous snakes.

• Do not corner, chase, pin or handle the snake unless authorised and appropriately trained.
• Stop nearby work if the animal is at immediate risk from machinery or people.
• Record the location, habitat and direction of movement, then report the observation to the site environmental representative.

Identification: Calls and similar species

The species is not known for an identifying call, and acoustic detection is not a useful primary survey method. Identification should rely on appearance, scale features, location and expert confirmation.

Brown snakes can be difficult to identify in the field because colour and pattern vary. Do not rely on a single colour feature.

• Dorsal scales are smooth and arranged in 19 to 21 rows at midbody.
• There are six supralabials, no temporolabial scale, a divided cloacal plate and paired subcaudals.
• Photograph the snake from a safe distance where possible, without delaying avoidance or safety actions.

Identification: Field signs

Direct sightings are the most useful field record. Droppings, nests, whitewash, stains and odour are not reliable signs for this species.

A snake may be concealed in grass, soil cracks, surface debris or other ground cover. Absence of a sighting does not demonstrate that a site is unoccupied.

• Record tracks or movement paths only as supporting evidence.
• Use photographs, GPS coordinates and a brief habitat description to support identification.
• Treat a snake found during clearing as a fauna management record and review whether additional searching is needed.

Distribution: Range in Australia

The Speckled Brown Snake has a patchy inland distribution associated with arid and semi-arid grassland landscapes. Regional records should be checked before works begin, particularly where the project affects black-soil plains or other clay-based grassland.

The species is mapped in New South Wales, the Northern Territory, Queensland and South Australia.

In the Northern Territory it occurs in the east, with an isolated or relict population in the north-central part of the Territory. In Queensland it occurs in south-central and western areas. In South Australia it is recorded from the extreme north-east.

• Confirm the relevant state and regional listing during project planning.
• Use local records and habitat mapping to refine the likelihood of occurrence at a site.
• Do not assume that a small or isolated population is absent because encounters are uncommon.

Distribution: Site-scale distribution

Within a project area, likely habitat is open grassland on clay or black soil, including tussock grassland on plains. Snakes may move through adjoining disturbed or modified areas when shelter and prey are available.

The species is terrestrial. No regular migration or predictable seasonal passage period has been established for site planning.

• Map connected grassland, drainage lines, depressions, soil cracks and retained ground cover before clearing.
• Include nearby habitat in the assessment where clearing could remove movement routes or concentrate animals in retained patches.

Distribution: Conservation and compliance

The Speckled Brown Snake is profiled as an EVNT species. It is listed as Rare in South Australia under the National Parks and Wildlife Act 1972.

In Queensland, near threatened animals are protected wildlife. Tampering with a breeding place requires a species management program.

• Obtain the project-specific permit, approval and fauna management requirements before clearing.
• Use a conservative approach where records, habitat and listing information indicate a reasonable likelihood of occurrence.
• Escalate unexpected records to the project ecologist and relevant regulator where required.

Habitat: Preferred landscape

Look for the Speckled Brown Snake in open, arid grassland on clay soils, especially black-soil plains. Retained tussocks, surface cover and intact soil features can provide shelter and support prey even where the surrounding landscape has been modified.

Typical habitat includes arid grasslands on clay substrates and tussock grasslands on black-soil plains. The species is most strongly associated with open terrestrial country rather than closed forest.

Flat or gently undulating plains, cracking clay and low-lying grassland should be assessed carefully before clearing.

• Black-soil plains and clay pans with grass cover.
• Tussock grassland with retained litter or surface debris.
• Edges between intact grassland and disturbed ground where snakes may move or forage.

Habitat: Features to map before works

Habitat mapping should describe soil type, grass structure, ground cover, drainage and the continuity of grassland across the work area. Note areas where clearing, grading or vehicle access will remove cover or alter the soil surface.

Because the species is poorly known, habitat suitability should be used alongside records and direct survey results.

• Retained grassland patches and links between them.
• Cracking clay, depressions and other ground features that may provide concealment.
• Logs, rocks, loose debris and dense tussocks that may be used as temporary cover.
• Areas where frogs or other likely prey may occur.

Habitat: Pre-clearing approach

Use a suitably experienced fauna spotter catcher during vegetation and ground disturbance. Search progressively, keep machinery speeds low where animals may be present, and maintain clear communication between the spotter, operators and supervisor.

Avoid unnecessary removal of surface cover before the fauna inspection. Stage clearing so animals have an opportunity to move away from active work areas where this is consistent with the approved method.

• Brief all workers on the species, its venomous status and the stop-work response.
• Inspect the work zone, access tracks, stockpiles and areas of retained habitat before disturbance.
• Record all sightings, including animals that move away without capture.

Foraging habitat: Foraging features

Adults appear to feed mainly on frogs, with occasional records of lizards and small mammals. Foraging habitat is therefore likely to include grassland with suitable ground cover and nearby wet or damp areas that support prey.

Search areas where tussock grass, litter and other cover meet open ground. Low-lying parts of black-soil plains and areas near temporary or permanent water may be relevant because frogs are an important apparent food source.

The species may forage across more than one habitat feature within a project area. Do not restrict the assessment to the immediate construction footprint.

• Dense tussocks and grass litter.
• Clay depressions, drainage features and seasonally damp ground.
• Edges of wetlands, farm dams or other frog habitat where present.
• Grassland supporting small reptiles or mammals.

Foraging habitat: Development risks to foraging habitat

Clearing, grading and compaction can remove cover and alter the soil surface. Drainage changes, water pollution and loss of wet areas can reduce frog prey and may affect the species indirectly.

Lighting, vehicle movements and open trenches can also increase the risk of animals entering active work areas or being killed by machinery.

• Keep unnecessary vehicle movements out of retained grassland.
• Protect water quality and avoid creating open excavations without fauna controls.
• Inspect spoil, pipe stacks, materials and trenches before movement or covering.
• Maintain a clear incident and sighting register for the work area.

Foraging habitat: Survey focus

Target searches at ground level through suitable grassland, particularly where cover, clay soils and prey habitat occur together. Surveys should be designed by an ecologist familiar with local conditions and adjusted for heat, access and worker safety.

There is no stated species-specific survey method or effort standard. Use repeatable searches and document the conditions, area searched, observers and time spent.

• Search during periods when snakes are likely to be active, while managing heat exposure and venomous snake risks.
• Include habitat outside the footprint where it may be affected by access, stockpiling, drainage or fragmentation.
• Treat a lack of detections as limited evidence where conditions are unsuitable or ground visibility is poor.

Breeding habitat: Breeding information for planning

The Speckled Brown Snake lays eggs, and clutches average about six eggs. Specific nesting places and breeding timing are poorly known, so ground disturbance should be managed conservatively wherever suitable grassland and concealed soil or surface features occur.

The species is oviparous. No dependable breeding month or regional breeding window should be assumed for a project unless supported by local survey or advice from the relevant authority.

Do not describe a site as free of breeding habitat simply because no nest is visible. Snake eggs and breeding sites can be concealed.

• Assess intact tussock grassland, cracking clay and sheltered ground features before clearing.
• Include areas proposed for stockpiles, laydown, access and temporary facilities.
• Retain and protect suitable habitat where practicable until the project ecologist confirms the approved treatment.

Breeding habitat: Potential breeding places

The exact breeding place types used by this species are not well established. As a practical precaution, inspect concealed ground features and areas where soil, litter or debris may provide stable shelter.

Avoid disturbing likely refuges during hand searches. A fauna spotter catcher should manage any snake or suspected breeding place encountered.

• Soil cracks, cavities and sheltered edges in clay ground.
• Dense tussock bases and accumulated grass litter.
• Logs, rocks, debris piles and other covered ground features.
• Undisturbed grassland adjoining the construction footprint.

Breeding habitat: Clearing and compliance controls

In Queensland, tampering with the breeding place of protected near threatened wildlife requires a species management program. State and project approvals may impose additional controls in other jurisdictions.

Where breeding habitat is suspected, pause the relevant disturbance and obtain direction from the project ecologist or regulator before proceeding.

• Include breeding-place procedures in the clearing and fauna management plans.
• Train spotters and operators to recognise and report concealed ground features and snakes.
• Do not fill, excavate, burn or remove suspected breeding features without approval.
• Document inspections, exclusions, incidents and any authorised relocation.

Sheltering habitat: Shelter features to look for

Specific shelter and overwintering sites have not been well characterised for this species. In working landscapes, assume that ground cover and small concealed features can provide temporary shelter and plan clearing accordingly.

Inspect dense tussocks, grass litter, soil cracks and covered ground on clay plains. Surface debris, rocks and logs may also provide concealment, particularly where they meet intact grassland.

Shelter can occur within or beside the footprint, including under materials or around disturbed soil.

• Tussock bases and thick grass litter.
• Cracking clay and small soil cavities.
• Logs, rocks, discarded materials and debris piles.
• Edges of stockpiles, access tracks and construction compounds.

Sheltering habitat: Construction controls

Keep work areas tidy and minimise the creation of artificial refuge. Store materials off the ground where practicable, inspect them before handling, and check trenches or pits before entry, movement or backfilling.

Use fauna controls for open excavations and provide safe escape arrangements where required by the approved management plan.

• Inspect trenches, pipes, culverts, formwork and stored materials regularly.
• Avoid leaving open pits unattended where fauna may enter.
• Remove or manage debris progressively rather than creating large refuge piles.
• Provide a clear stop-work and escalation process for snake sightings.

Sheltering habitat: Safe response to a sighting

Keep people and plant away from the snake and allow a clear path for movement where this can be done safely. Do not attempt to identify, catch or relocate it without appropriate training and authorisation.

A qualified fauna spotter catcher should determine the response under the project procedure. Any relocation should comply with the relevant approval and animal welfare requirements.

• Stop nearby activity if the snake is exposed to immediate risk.
• Maintain a safe exclusion area appropriate to the site risk assessment.
• Use photographs and location records to support identification and compliance reporting.
• Arrange first aid and emergency procedures for suspected snakebite before works commence.

Threats: Clearing and habitat loss

The main development risks are direct mortality, loss of grassland and disturbance of clay soils. The species is poorly known, so project controls should be based on habitat suitability, the conservation listing and the risk created by the proposed works.

Removal of tussock grassland and black-soil plains can eliminate shelter, foraging areas and potential breeding places. Fragmentation can also reduce the continuity of suitable terrestrial habitat.

Give additional scrutiny to projects that remove large or connected areas of clay-based grassland.

• Avoid clearing outside the approved footprint.
• Retain suitable grassland where practicable and protect it from vehicle access and stockpiling.
• Map and manage indirect impacts such as drainage changes, dust and edge disturbance.

Threats: Machinery, vehicles and earthworks

Snakes can be killed or injured during slashing, grading, excavation, trenching and vehicle movements. Soil compaction and removal of surface cover can also reduce available refuge.

Use a trained spotter catcher and progressive clearing procedures, with stop-work arrangements for fauna encounters.

• Inspect the work area before machinery enters.
• Use pre-start briefings and clearly communicate sightings to operators.
• Check trenches, spoil and stored materials before disturbance or relocation.
• Record and investigate any fauna injury or mortality.

Threats: Loss of prey and altered water conditions

Because adults appear to feed mainly on frogs, changes to wetlands, drainage and water quality may reduce prey availability. Removal of grass cover may also affect lizards and small mammals taken occasionally by the species.

Protect nearby wet areas and manage sediment, pollutants and altered flows under the project environmental controls.

• Avoid unnecessary filling or drainage of low-lying habitat.
• Control sediment and contaminants entering frog habitat.
• Retain connected grassland around suitable prey areas where practicable.
• Include prey habitat in impact and rehabilitation assessments.

Threats: Conservation and management response

South Australian populations are listed as Rare, and the species is profiled as an EVNT species. Apply survey and management effort proportionate to the listing, the amount of suitable habitat affected and the likelihood of direct encounters.

In Queensland, the species is protected wildlife and disturbance to a breeding place requires a species management program.

• Use local records, habitat mapping and targeted field searches before finalising clearing methods.
• Escalate records from high-suitability habitat to the project ecologist and relevant authority.
• Protect retained habitat and review controls if repeated sightings occur.
• Ensure all workers understand that the snake is venomous and legally protected in relevant jurisdictions.

Survey methodology: 1. Desktop assessment

The Speckled Brown Snake is a poorly known, front-fanged venomous snake of arid grasslands and black-soil plains. Plan surveys around suitable tussock grassland on clay or black soil, and use experienced personnel who can work safely around venomous snakes.

Map black-soil plains, clay grasslands, tussock cover, drainage lines, farm dams and other areas that may support frogs. Check recent records and habitat connectivity across the site and surrounding landscape.

Confirm the applicable conservation listing and approval pathway before fieldwork. The species is mapped in New South Wales, the Northern Territory, Queensland and South Australia. It is listed as Rare in South Australia and is treated as an EVNT species for this profile.

• Overlay the proposal footprint with native grassland, refuge cover and likely movement areas.
• Identify areas where clearing, earthworks, road construction, stockpiling or changes to drainage could remove habitat.
• Record land use, grazing pressure, fire history, weeds, soil type and nearby water sources.
• Treat records from the regional database as indicators of potential presence, not proof that the species is absent from unsurveyed habitat.

Survey methodology: 2. Field detection and timing

Use experienced ecologists and fauna spotter catchers to search by walking suitable habitat, inspecting surface cover and checking areas that will be disturbed. The species is primarily diurnal, but it may be crepuscular or nocturnal during hot weather.

Schedule searches in mild conditions when snakes are more likely to be moving. Avoid relying on a single visit after extreme heat, cold, heavy rain or strong wind. There is no established species-specific survey window, breeding season or migration period, so use repeated coverage where the risk is high.

• Search tussock bases, grass margins, fallen timber, surface debris, soil cracks and other sheltered locations without unnecessarily damaging habitat.
• Use a systematic traverse that covers the full disturbance footprint and the proposed access and laydown areas.
• Recheck areas with dense cover, recent sightings or suitable frog habitat before clearing starts.
• Do not handle or pursue a snake merely to confirm identification.

Survey methodology: 3. Survey effort and weather records

Set survey effort according to habitat quality, disturbance scale, access and the consequences of missing a venomous snake. A qualified ecologist should document the rationale where no fixed species-specific effort standard applies.

Record conditions that affect detectability, including temperature, cloud cover, wind, recent rainfall, time of day and ground visibility.

• Use the same search route and method on repeat visits where practical.
• Record start and finish times, personnel, search area, method, visibility and any access limitations.
• Photograph habitat and tracks or signs where this can be done safely.
• Treat a non-detection as limited evidence of absence, particularly in dense grass, deep cracking clay or areas with restricted access.

Survey methodology: 4. Records and identification

Record all observations, including animals seen outside the clearing footprint. The Speckled Brown Snake is variable in colour, from pale fawn to orange-brown or grey-brown, and may be banded, blotched or speckled. The belly is commonly yellow or orange with orange blotches.

Obtain photographs from a safe distance where possible. Do not place staff at risk to obtain a close image.

• Record location, date, time, habitat, behaviour, estimated length, direction of travel and whether the animal was injured or captured.
• Describe the substrate and vegetation, including black soil, clay, tussock grass and nearby water.
• Submit uncertain identifications to a suitably experienced herpetologist or fauna ecologist.
• Keep a register of all sightings, captures, relocations and work stoppages.

Before habitat disturbance: 1. Confirm approvals and permits

Avoidance is the first response because this species is venomous and its breeding ecology is not well documented. Complete approvals, survey and site controls before machinery or ground crews enter habitat.

Have the project ecologist confirm whether the action requires referral under the Environment Protection and Biodiversity Conservation Act 1999. A referral may be needed if the action is likely to have a significant impact on a listed threatened species or other matter of national environmental significance.

In Queensland, obtain or comply with the applicable species management program where the action may tamper with the breeding place of this near threatened animal. Obtain any required state or territory wildlife, fauna handling, relocation or scientific permits before work begins.

• Check requirements in New South Wales, the Northern Territory, Queensland and South Australia when work crosses jurisdictions.
• Confirm that the fauna spotter catcher is authorised for venomous snake capture and relocation in the relevant jurisdiction.
• Include permit conditions, approval conditions, stop-work triggers and reporting contacts in the clearing plan.
• Do not assume that a general clearing approval authorises capture, handling or relocation of this snake.

Before habitat disturbance: 2. Apply avoidance and buffers

Retain black-soil plains, clay grassland, tussock cover and connected habitat wherever practicable. There is no fixed species-specific buffer or breeding season available for this species, so set buffers through the ecological risk assessment and approval conditions.

Increase the exclusion area where a snake, shelter site, breeding place or repeated observation occurs. Keep machinery, vehicles, spoil and materials outside the marked area until the ecologist releases it.

• Mark retained habitat, exclusion zones, access routes and no-go areas on plans and on the ground.
• Avoid unnecessary removal of surface cover, soil cracking, logs and grass tussocks.
• Maintain natural drainage and avoid actions that remove frog habitat where frogs may support the snake's food supply.
• Do not schedule work on the assumption that the species migrates at a known time. Review timing if local observations show seasonal movement or increased activity.

Before habitat disturbance: 3. Complete pre-clearance checks

Complete a pre-clearance inspection immediately before disturbance, with the final timing set by the project ecologist and approval conditions. Repeat the check after a delay, major weather change or change in the clearing footprint.

The inspection should cover the full work area, vehicle access, stockpiles, trench alignments and temporary facilities.

• Remove people and machinery from the search area while the inspection is underway.
• Inspect likely shelter and basking areas without placing hands into holes, cracks, dense grass or debris.
• Brief the spotter catcher on the footprint, retained habitat, access points, emergency contacts and approved relocation area.
• Mark any live animal, shelter or suspected breeding place and apply the stop-work procedure.

Before habitat disturbance: 4. Induct the work crew

Give every worker a short site induction before work starts. Explain that the Speckled Brown Snake is venomous and can adopt an open-mouthed, S-shaped defensive posture when threatened.

Make the spotter catcher the single point of contact for snake decisions. Workers must never attempt to kill, catch, corner, photograph closely or relocate a snake.

• Tell workers to stop, move away slowly and notify the spotter catcher if they see a snake.
• Provide the site's snakebite first aid and emergency response procedure, including pressure immobilisation and urgent medical assistance.
• Keep first aid supplies, communication devices and access routes available throughout clearing.
• Record attendance at the induction and refresh it when contractors or shifts change.

During habitat disturbance: 1. Clear in stages

Use staged clearing with a spotter catcher present and authority to stop work. Keep people away from the animal and allow the authorised handler to manage capture, relocation or release.

Clear in a controlled sequence from already disturbed areas towards retained habitat, where this is safe and consistent with the approved clearing plan. Work at a pace that allows the spotter catcher to inspect the next area before machinery enters.

Pause work whenever visibility is poor, the inspection cannot be completed or a snake moves into the work zone.

• Maintain a clearly defined active clearing zone and a checked zone ahead of machinery.
• Keep machinery buckets, blades and vehicles raised or stationary while the spotter catcher investigates an observation.
• Retain escape routes towards suitable habitat where this does not place the animal or workers at risk.
• Do not drive over, trap or force a snake from cover.

During habitat disturbance: 2. Manage animals and possible breeding places

Only an authorised person may capture, handle or relocate the Speckled Brown Snake. The animal should be left undisturbed unless it is in the disturbance footprint or presents an immediate safety risk.

The species' breeding place types are not well documented. Treat a suspected nest, eggs, young, occupied shelter or repeated use of a site as a potential breeding place and stop work in the immediate area.

• Establish an exclusion zone and contact the project ecologist and relevant authority where an active breeding place is found.
• Do not remove eggs, young, shelter or surrounding soil unless this is specifically authorised and directed by the relevant wildlife authority.
• Do not assume that a group of snakes is a colony. Record the observation and seek species-specific advice before disturbing the site.
• Release a captured animal only under the permit, approval and fauna management plan, in suitable nearby habitat selected by the ecologist.

During habitat disturbance: 3. Respond to injuries and snakebite

If a worker is bitten, stop work and activate the site emergency plan immediately. Keep the person still, apply pressure immobilisation if trained to do so, call emergency services and arrange urgent hospital assessment.

If a snake is injured, keep people and pets away and contact the authorised fauna handler, wildlife carer or veterinarian nominated in the project plan.

• Do not attempt first aid on an injured snake unless directed by an authorised wildlife professional.
• Do not transport a venomous snake in a vehicle unless the handler is authorised and the transport method is approved.
• Record the location, apparent injury, actions taken and final disposition.
• Review the work area for the cause of injury and make it safe before restarting.

During habitat disturbance: 4. Keep clearing records

The spotter catcher should maintain records throughout the operation and provide them to the project ecologist at the end of each shift or work stage.

Use records to confirm that approval conditions, exclusion zones and handling requirements were followed.

• Record every sighting, capture, relocation, injury, death, breeding-place observation and work stoppage.
• Include date, time, location, habitat, personnel, machinery, weather, photographs and identification confidence.
• Record the original and release locations for any relocated animal, subject to permit requirements.
• Report any unexpected mortality, unauthorised handling or breach of an exclusion zone to the site manager and relevant authority.

After habitat disturbance: 1. Complete post-clearance checks

Do not treat the end of mechanical clearing as the end of fauna risk. Complete a final inspection, close out records and check that retained habitat and relocated animals have not been affected by follow-up works.

Inspect the cleared footprint, retained edges, stockpiles, trenches, drains and temporary access areas after clearing and before construction proceeds. Check places where animals may have been trapped or injured.

Repeat checks after overnight works, major weather events or changes to the approved footprint.

• Search safely for live or injured snakes, trapped fauna, eggs, young and disturbed shelter.
• Check that exclusion fencing, habitat markers and fauna escape measures remain in place.
• Remove or make safe open trenches, pits and pipes in accordance with the fauna management plan.
• Release the area only when the spotter catcher or ecologist confirms that the post-clearance inspection is complete.

After habitat disturbance: 2. Report outcomes

Prepare a fauna clearance report that links observations and actions to the approval and management plan. Include non-detections and survey limitations, not only captures.

Submit statutory notifications within the time required by the relevant permit or approval.

• Summarise survey dates, conditions, effort, personnel, methods and areas inspected.
• List all Speckled Brown Snake records, handling events, relocation details, injuries, deaths and breeding-place findings.
• Provide maps, photographs, permits, incident forms and chain-of-custody details for any specimens.
• Notify the land manager and conservation authority of significant records or incidents where required.

After habitat disturbance: 3. Monitor relocated animals and retained habitat

Monitoring should be scaled to the risk, the conservation listing and the approval conditions. Give higher priority to sites with repeated records, high-quality black-soil grassland, breeding-place observations or substantial habitat loss.

Relocation is not proof that the animal has successfully established. Use follow-up checks only where they can be done safely and under an approved monitoring design.

• Check the release area for habitat condition, disturbance, road hazards, predators, weeds and access by machinery.
• Record any later observations without recapturing animals unless the monitoring approval allows it.
• Check retained grassland edges for erosion, drying, weed invasion and loss of tussock cover.
• Continue monitoring where required by a Queensland species management program, state permit, development approval or environmental management plan.

After habitat disturbance: 4. Review incidents and improve controls

Hold a short review after clearing and after any snake incident. Include the spotter catcher, supervisor, ecologist and contractors involved in the work.

Use the review to improve the next work stage rather than waiting for the project close-out.

• Identify where detection, exclusion, communication or machinery controls failed.
• Update the clearing sequence, induction, emergency contacts and inspection method where needed.
• Record corrective actions, responsible people and completion dates.
• Share relevant lessons with later work crews and subcontractors.

Rehabilitation actions: 1. Restore habitat structure

Rehabilitation should restore the structure and function of black-soil and clay grassland rather than simply cover disturbed ground. The species is associated with tussock grasslands and appears to feed mainly on frogs as an adult, so vegetation, soil and water management should be considered together.

Retain and reinstate native tussock grassland on suitable clay and black-soil areas. Protect soil profiles and natural cracking where this is consistent with erosion and safety requirements.

Reconnect retained habitat where practicable, especially around the edges of cleared areas and between grassland patches.

• Use locally appropriate native grass and groundcover species approved by the restoration ecologist.
• Replace compacted topsoil and repair erosion before revegetation.
• Retain natural surface cover, grass tussocks and appropriate fallen timber where they do not create a safety hazard.
• Prevent vehicles, stock and storage from entering rehabilitated areas until vegetation is established.

Rehabilitation actions: 2. Manage water, weeds and fire

Maintain natural drainage and avoid rapid drying or waterlogging of black-soil grassland. Water features should be retained or restored only where they are suitable for the approved design and do not create new hazards.

Manage weeds so native tussock cover can recover. Coordinate fire planning with the land manager because the species' response to fire and fire timing are not well documented.

• Control weeds before they seed and continue follow-up treatment after rehabilitation.
• Avoid introducing non-native aquatic species or creating artificial water bodies without ecological and regulatory review.
• Use erosion and sediment controls that do not trap snakes or block movement.
• Record fire, grazing, weed treatment and hydrological changes during monitoring.

Rehabilitation actions: 3. Use structures only with species-specific advice

Nest boxes, bat boxes, artificial nest sites and roost structures are not standard replacement measures for this snake. Its breeding places and shelter requirements are poorly documented, so do not install artificial structures as a default action.

If a breeding place or repeated shelter site is affected, obtain advice from the relevant wildlife authority and a reptile ecologist before designing any replacement feature.

• Prioritise protection and restoration of natural grassland, soil cracks and surface shelter.
• Do not place boxes, pipes, rock piles or other artificial refuges where they could create a worker safety hazard or concentrate snakes near buildings and access tracks.
• Document the design, location and maintenance requirements of any approved replacement feature.
• Inspect approved structures only under a safe, authorised monitoring procedure.

Rehabilitation actions: 4. Control lighting and ongoing disturbance

Limit night lighting around retained and rehabilitated grassland. The species is mainly diurnal but may be active at dusk or night in hot weather, and lighting can alter frog activity and movement around habitat.

Keep ongoing disturbance low once rehabilitation begins.

• Use the lowest practical light level and direct lights away from grassland, drainage lines and retained habitat.
• Use timers, shields and warm-spectrum fittings where lighting is necessary and consistent with safety requirements.
• Restrict vehicle access and prevent new tracks through rehabilitated areas.
• Remove temporary fencing, waste and construction materials when the ecologist confirms that they are no longer needed.

Rehabilitation actions: 5. Monitor rehabilitation

Monitor vegetation establishment, soil stability, weeds, hydrology and habitat connectivity for the period required by the approval or rehabilitation plan. Add targeted fauna checks where the site had records or high-quality habitat.

Use monitoring results to adjust weed control, grazing, erosion treatment and access controls.

• Set clear completion criteria for native cover, tussock establishment, erosion control and weed reduction.
• Record Speckled Brown Snake observations and any evidence of use of rehabilitated areas.
• Inspect after wet and dry periods and after major disturbance or fire.
• Continue adaptive management until the site is stable and the agreed rehabilitation criteria are met.

Sources

• Snakes of the Mt Isa region | Environment, Queensland Government: https://environment.qld.gov.au/wildlife/animals/living-with/snakes/near-you/mt-isa-region
• Brown snakes, <em>Pseudonaja</em> <small>Günther, 1858</small>, biomedicalsciences.unimelb.edu.au: https://biomedicalsciences.unimelb.edu.au/departments/department-of-biochemistry-and-pharmacology/engage/avru/discover/snakes/common-brown-snake
• Occurrence records for the distribution map, Atlas of Living Australia: https://biocache.ala.org.au/