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Western Grasswren (Amytornis textilis)

The Western Grasswren is a small, ground-dwelling grasswren of arid and semi-arid shrublands in inland and coastal Western Australia, with related subspecies in South Australia, the Northern Territory and formerly western New South Wales. It is cryptic, sedentary and closely associated with low chenopod and other dense shrub cover, so clearing can remove both feeding habitat and low nesting cover before birds are detected.

Conservation status

Commonwealth, EPBC Act 1999: Vulnerable.

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

Breeding season

The species is resident in suitable habitat throughout the year. Breeding is concentrated from late June to September, with additional breeding possible from January to April after sufficient rainfall.

Survey timing should be adjusted to local rainfall, recent records and the subspecies present. Early morning searches are recommended because birds feed then and are otherwise difficult to detect.

  • Breeding: Active nests have been recorded from late June to September, with most clutches reported in August. Breeding may also occur from January to April after sufficient rainfall.
  • Young: Nests and young may be present during the main nesting period. Fledging is reported at 15 to 17 days, but the duration of post-fledging dependence is not provided.
  • Movement or dispersal: The species is generally sedentary or resident. Some birds may make nomadic movements after breeding or during particularly dry periods.
  • Rain-responsive breeding: In central Australian populations, breeding is reported from January to April when summer rainfall provides suitable conditions and food.
  • Highest clearing risk: Clearing and ground disturbance are most likely to harm birds and nests from late June to September. A secondary risk period occurs from January to April when rainfall triggers breeding.

Identification

The Western Grasswren is small, cryptic and usually detected moving through low shrubs rather than flying. It has a short, rounded wing, a long cocked tail and a short, thick bill.

Adults are grey-brown to earthy brown above and fawn-brown below, with fine or subdued off-white streaking on the crown, back, throat and breast. The heavy bill is distinctive among grasswrens. The tail is commonly held high, and flight is short and low, with the tail drooping.

The western population is about 170 to 190 mm long and weighs 18 to 23 g. Across the species, reported adult length is 15 to 20 cm and weight is 19 to 24 g.

Length: 170 to 190 mm in the western population

Weight: 18 to 23 g in the western population

Bill: Short and thick, used to crush seeds

Identification: Similar species and sex differences

Within the range of the eastern subspecies, the species can be confused with the Eyrean Grasswren and the Short-tailed Grasswren. Identification should use bill shape, tail length, plumage streaking, habitat and call together.

Sexes differ slightly. Females may show chestnut on the flanks. The eastern subspecies is paler overall than other thin-billed grasswrens and is generally less boldly streaked.

  • Do not rely on a brief view of a small brown bird in cover. Obtain photographs, a clear call description or an expert identification where possible.
  • Record the vegetation type and whether the bird was running or hopping on the ground, because habitat and behaviour help separate grasswrens in areas of overlap.

Identification: Calls, nests and field signs

The call is soft and very high-pitched. Descriptions include a soft, squeaky or reeling 'see-see-see' and a brief squeaky trill. Males may give short, reedy, metallic whistles from a vantage point during the main breeding period.

There are no species-specific tracks, scats, feathers, eyeshine or other non-breeding field signs described in the supplied documents. The most useful signs are direct sightings, calls and nests.

Nests are hooded or cup-shaped structures close to the ground, usually in dense shrubs. They are made from dry grass, twigs and bark. Eastern birds commonly nest in saltbush or bluebush, while western birds use a range of low shrubs.

Typical nest height: About 0.3 m above ground in a western population study

Fledging period: 15 to 17 days, based on the western population fact sheet

  • Search slowly through dense shrub margins and listen during calm early morning conditions.
  • Treat a low nest in a shrub as a potential grasswren nest until identified, and establish an exclusion area before vegetation is disturbed.

Distribution: States and regions

Amytornis textilis is endemic to inland Australia and occurs as three recognised subspecies in separate areas. The species has undergone a major contraction since European settlement.

The western subspecies, A. t. textilis, occurs in Western Australia, including the Shark Bay region. The Gawler Ranges subspecies, A. t. myall, occurs in South Australia. The eastern subspecies, A. t. modestus, occurs in north-eastern South Australia and southern Northern Territory, and formerly occurred across western New South Wales.

Important documented areas include the Shark Bay region, the Lake Eyre and Lake Frome basins, the Gawler Ranges, and historical sites in western New South Wales. The species is associated with arid environments rather than a continuous range.

  • Treat suitable chenopod shrubland as potential habitat within the known range, even where recent records are absent.
  • Check current state and project databases before works because the supplied recovery plan records a long period without confirmed records in New South Wales.

Distribution: Strongholds and subpopulations

The western population in Shark Bay is an important known population, with suitable habitat in open saltbush and bluebush shrublands and dense wattle shrubland around Monkey Mia. The eastern form was described as locally common in parts of the Lake Eyre and Lake Frome basins in South Australia.

The three subspecies are isolated from one another. Suitable habitat may occur in separated pockets, with some occupied patches separated by many kilometres of apparently suitable vegetation.

Distribution: Population size and trend

No total population estimate is provided in the supplied documents. The documented trend is a dramatic contraction of distribution since European settlement.

The eastern form was once widespread in western New South Wales, but the last documented New South Wales record was near Tibooburra in 1956. The recovery plan notes that the absence of recent records may reflect inadequate targeted survey as well as possible local extinction.

Total population estimate: Not provided in the supplied documents

Historical New South Wales record: Last documented record near Tibooburra in 1956

Known subspecies: Three: western, eastern and Gawler Ranges

Habitat: Vegetation communities

The Western Grasswren uses low, dense shrublands in arid Australia. Retaining connected patches of dense ground and shrub cover is more important than retaining isolated overstorey trees.

Typical habitat includes open saltbush and bluebush shrublands, chenopod shrublands and dense wattle shrubland. The species also uses mallee, lignum, canegrass and other low shrub habitats across its broader range.

In the Gawler Ranges, birds occur in open chenopod shrublands, including dense stands of dead finish and blackbush around drainage lines. Sparse or open low trees and shrubs may occur above the chenopod layer.

  • Map saltbush, bluebush, chenopod, wattle and other dense low shrub patches before clearing.
  • Include drainage-line shrublands and apparently degraded shrub patches in habitat assessments where dense ground cover remains.

Habitat: Habitat structure and climate

The birds spend most of their time on the ground and use dense shrubs for concealment. They may briefly perch on exposed branches or other vantage points before returning to cover.

The species is associated with arid environments. Breeding may increase after sufficient rainfall, including summer rainfall in central Australian populations. The supplied documents do not provide a specific elevation limit.

Reported territory scale: Pairs may remain in the same 4 to 5 ha area throughout the year

Reported breeding territory: About 1 ha during one good season study

Elevation limit: Not provided

  • Retain dense shrub cover, low foliage and litter where practicable, rather than clearing down to bare ground.
  • Avoid breaking a large shrub patch into small isolated remnants, because territories may occur in pockets separated by many kilometres.

Foraging habitat: Diet and feeding behaviour

Western Grasswrens forage mainly on the ground within or beside low shrubs. Their heavy bill is adapted for handling and crushing seeds.

The diet includes seeds and insects. Birds run and hop through cover while feeding, usually in pairs or family groups. In Shark Bay they are most readily seen early in the morning when feeding on the ground.

The short, thick bill is used to crush seeds. The supplied documents do not identify a complete list of food plants or quantify the proportions of seeds and insects.

Main food types: Seeds and insects

Typical feeding location: On the ground within low shrub cover

Reported feeding groups: Pairs or family groups

  • Inspect the ground layer and shrub bases, not only the tree canopy, when assessing foraging habitat.
  • Schedule searches in the early morning where practicable, when feeding activity and detectability are higher.

Foraging habitat: Foraging area

Pairs may use the same 4 to 5 ha area throughout the year. The species is probably territorial year-round, although groups and movement patterns can vary between populations and after breeding.

Foraging habitat includes saltbush and bluebush shrublands, dense wattle shrubland and other low chenopod or arid shrub communities.

Reported year-round area: 4 to 5 ha for some pairs

  • Assess the full shrub patch and connected cover around a proposed impact area, not only the vegetation directly under the footprint.
  • Maintain access between feeding cover and nearby nesting or sheltering shrubs.

Breeding habitat: Breeding biology

Breeding information is limited and is drawn partly from western population studies and partly from eastern population records. Rainfall appears to influence breeding opportunity and the possibility of a second brood.

Pairs are probably monogamous, but cooperative breeding has also been suggested because additional adults have been observed feeding young and performing distraction displays. Nests are usually placed in low shrubs, with eastern birds often using saltbush or bluebush.

Nests may be open cups or fully domed structures. They are built from dry grass, twigs, saltbush material and bark, and are usually positioned in the densest and tallest part of the shrub.

Main breeding season: Late June to September, with most clutches reported in August

Additional breeding period: January to April after sufficient rainfall

Clutch size: Two to three eggs

Fledging period: 15 to 17 days

Age at maturity: Not provided

Lifespan: Not provided

Nest height: Median height about 0.3 m above ground in a western population study

  • Search dense shrubs close to the ground before clearing, particularly saltbush, bluebush, wattle and other structurally similar shrubs.
  • If a nest is found, stop works around the nest and obtain project-specific advice on an appropriate buffer and timing of disturbance.

Breeding habitat: Breeding structure

Nests have been recorded in a wide range of shrubs in western populations. Eastern birds show a stronger association with saltbush and bluebush, with one record in sandhill canegrass and another among flood debris.

In one western study, nests had 0.15 to 1.10 m of foliage above them. Entrances usually faced towards the densest and tallest part of the bush.

Foliage above recorded nests: 0.15 to 1.10 m

Nest spacing in one season: Four nests were found within 100 m of another nest at Monkey Mia

  • Retain shrubs with dense internal foliage and low branches, even where the surrounding vegetation is open.
  • Avoid driving or stockpiling materials through shrub interiors during the breeding season.

Sheltering habitat: Cover and escape habitat

Shelter is provided mainly by dense low shrubs and ground-level cover. The species does not depend on tree hollows or large burrows according to the supplied documents.

Birds spend most of their time on the ground and quickly dart undercover when disturbed. Dense saltbush, bluebush, wattle, chenopod and similar low shrub cover provides concealment and escape shelter.

Birds may briefly use exposed branches or other vantage points, but the main sheltering resource is low, dense vegetation.

Ground use: Most activity occurs on the ground

Known shelter type: Dense low shrubs and understorey

Hollows or dens: Not described as a shelter requirement

  • Retain continuous low shrub cover around known records and suitable habitat.
  • Keep machinery, personnel and temporary storage out of dense shrub interiors wherever practicable.
  • Do not assume that a patch is unused because birds are not visible during a brief inspection.

Sheltering habitat: Nesting refuge

Nests are located within shrubs, close to the ground, and are directed towards the densest foliage. Some records also place nests in flood debris, so fallen vegetation may provide local nesting or shelter structure.

The supplied documents do not report a specific burrow, hollow, roost or refuge dimension other than recorded nest height and foliage height.

Recorded nest height: Median 0.3 m above ground

Recorded foliage above nest: 0.15 to 1.10 m

Threats: Habitat loss and degradation

The main documented threats are loss and degradation of arid shrub habitat, severe drought, grazing impacts and introduced predators. Clearing can remove the low shrub structure needed for feeding, shelter and nesting.

The species has undergone a major range contraction since European settlement. The recovery plan identifies severe drought, land degradation from overstocking and rabbit plagues as likely major causes of historical decline.

In Shark Bay, habitat degradation associated with goats and sheep has been identified as a conservation issue. Clearing, widening tracks, construction compounds and repeated vehicle access can remove or fragment the low shrub cover used throughout the year.

  • Avoid clearing saltbush, bluebush, chenopod, wattle and other dense low shrub patches where practicable.
  • Keep the work footprint and access tracks within already disturbed areas.
  • Prevent unnecessary breaks between occupied or potentially suitable shrub patches.
  • Control grazing and prevent stock or feral herbivores from entering retained habitat where this is part of the project controls.

Threats: Predators, drought and fire

Feral cats are identified as a threat in the Shark Bay region and are believed to have contributed to local extinctions, including on Dirk Hartog Island. Drought can reduce breeding activity and may cause some otherwise sedentary birds to move nomadically.

The supplied documents do not identify fire as a specific threat for this species, and they do not provide a fire interval or fire response. Fire that removes dense shrub cover should nevertheless be treated as a potential habitat impact during project planning.

  • Do not create new food, water or waste sources that could increase feral predator activity near retained habitat.
  • Retain unburnt dense shrub refuges where fire is being used for site management.
  • Reassess habitat and survey effort after fire, drought or major grazing disturbance.

Threats: Construction and survey risks

The species is furtive, difficult to observe and has a soft, high-pitched call that can be masked by wind. A short inspection can therefore miss birds and low nests.

The supplied documents do not identify a species-specific disease threat or a hydrology change as a confirmed threat. Drainage-line shrublands and flood debris can form habitat, so changes to drainage or surface water movement should be assessed where these features occur.

Recommended area search effort: 15 hours over 3 days for areas under 50 ha

Recommended broadcast survey effort: 15 hours over 3 days for areas under 50 ha

Recommended mist-netting effort: 15 hours over 3 days, where appropriate and authorised

  • Use early morning area searches or transects in suitable habitat before clearing.
  • Use call and sight observations, and consider broadcast surveys during the breeding season where permitted and supervised by an appropriately qualified ecologist.
  • Inspect dense low shrubs at ground level before vegetation removal.
  • Stop and reassess if a grasswren, nest or repeated call is detected within or beside the work area.

Survey methodology: 1. Area searches and transects

Survey the Western Grasswren in suitable chenopod shrubland before clearing or construction. The species is furtive, ground-dwelling and difficult to detect, so use early morning searches supported by call playback where appropriate.

Search suitable habitat early in the morning, when birds are active, using slow area searches or transects. Detect birds by sight and call.

Target saltbush, bluebush and other chenopod shrublands, including dense low shrub cover and areas with scattered low trees or shrubs.

The eastern subspecies is usually seen singly, in pairs or in small groups. It may briefly climb to a vantage point before disappearing into cover.

Keep searches slow and quiet. The call is soft and high pitched, and may be difficult to hear in windy conditions.

Recommended timing: Early morning; the breeding period is generally late June to September, with possible breeding from January to April after sufficient rainfall.

Minimum effort: 15 hours over 3 days in areas of less than 50 hectares

  • Survey areas of less than 50 hectares using at least 15 hours of area searches or transects over 3 days.
  • Record the search area, transect route, start and finish times, weather, wind, habitat condition, observers and all detections.

Survey methodology: 2. Call playback or broadcast surveys

Use broadcast surveys in suitable dense shrubland, particularly during the breeding season, to supplement searches.

Use the species' territorial call and allow sufficient quiet listening time after each broadcast. Do not rely on playback alone, because the species can be difficult to detect and its response is not established in all conditions.

Avoid playback during very windy conditions, when the naturally soft call may not be audible.

  • Apply at least 15 hours of broadcast surveys over 3 days in areas of less than 50 hectares.
  • Record the playback locations, timing, weather, wind, equipment, call used, listening periods and any response or sighting.

Survey methodology: 3. Ground-level mist-netting

Mist-netting may assist in low, dense vegetation where visual and call-based surveys do not provide a clear result.

Set the bottom pocket of the net at ground level, because the species spends most of its time on the ground and moves through low cover.

Use mist-nets only under an approved wildlife research or fauna handling protocol, with appropriately authorised and experienced personnel.

  • Use up to 15 hours of mist-netting over 3 days where this method is justified and authorised.
  • Check nets frequently enough to prevent heat stress, exposure or injury, and release captured birds promptly at the capture location unless an approved relocation or veterinary procedure applies.

Survey methodology: 4. Survey conditions and interpretation

Plan repeat visits where weather, dense vegetation or access conditions are likely to reduce detection. The species is cryptic and its call is soft, so a non-detection does not demonstrate absence.

Survey the full range of habitat that may be disturbed, including shrub patches, narrow habitat connections and apparently isolated chenopod stands.

Treat a sighting, call, nest or other credible record as a potential project constraint until its location and management requirements have been reviewed.

  • Avoid treating unsuitable weather, strong wind or noisy machinery periods as adequate survey conditions.
  • Map every detection with coordinates, date, time, observer, subspecies if known, behaviour, habitat and photographs or sound recordings where available.
  • Do not use the western grasswren fact sheet alone to identify the eastern or Gawler Ranges subspecies; obtain specialist advice where identification is uncertain.

Survey methodology: Minimum effort and reporting

  • Complete at least 15 hours over 3 days of area searches or transects in each suitable survey area under 50 hectares.
  • Add at least 15 hours over 3 days of broadcast surveys where the species is a project risk and access, approvals and animal welfare controls allow it.
  • Use mist-netting only where the habitat and approvals justify it, with up to 15 hours over 3 days as the guideline effort.
  • Submit confirmed and credible records to the relevant state or territory wildlife database and provide records to the project environmental representative.
  • Report the survey footprint, effort, conditions, observers, methods, detection results, habitat description, photographs or recordings, and any limitations.

Before habitat disturbance: Avoid and minimise

Treat retained chenopod shrubland as potential Western Grasswren habitat before clearing. The species is sedentary or resident, uses low dense cover and may remain within a small area throughout the year.

Redesign the footprint to retain saltbush, bluebush and other dense low shrubland, especially connected patches and areas with scattered trees or shrubs.

Retain habitat links between shrub patches because the species is generally sedentary and may maintain a territory throughout the year.

Keep construction traffic, laydown areas, spoil and fencing out of retained shrubland and avoid creating gaps between retained patches.

Give additional protection to dense wattle, saltbush and bluebush cover used for feeding, shelter and nesting.

  • Map and mark all suitable shrubland inside and beside the disturbance area before works begin.
  • Use the smallest practicable clearing footprint and place access tracks, compounds and stockpiles in already disturbed areas.
  • Set project-specific exclusion zones around retained habitat after a site assessment by the project ecologist.

Before habitat disturbance: Approvals and timing

Confirm the relevant EPBC Act requirements because the species or listed subspecies is nationally listed as Vulnerable.

Check state or territory threatened species legislation, wildlife permits and fauna handling requirements before survey, clearing, trapping or relocation.

Schedule clearing outside the main breeding period of late June to September where practicable, and review timing after sufficient summer rainfall because breeding may also occur from January to April.

Prepare a fauna management plan that identifies habitat, survey effort, exclusion zones, authorised fauna handlers, stop-work triggers, release sites and reporting responsibilities.

  • Obtain written environmental approval for the clearing method, survey approach and fauna handling procedure before mobilisation.
  • Stage works so that retained habitat remains connected and available while each disturbance area is cleared.
  • Reassess the work program if active nests, dependent young or occupied habitat are found.

Before habitat disturbance: Site preparation

Complete the pre-clearance survey using the recommended area search and, where justified, broadcast methods before vegetation is disturbed.

Clearly mark retained shrubland, no-go areas, access routes and fauna release areas on plans and on the ground.

Install exclusion fencing where it can prevent machinery and personnel entering retained habitat without fragmenting movement routes or trapping birds.

Brief machinery operators and the fauna spotter catcher on the species' low, furtive movements and its tendency to disappear into dense cover.

  • Remove rubbish, loose materials and avoidable hazards from the work area before clearing.
  • Inspect proposed work areas for nests close to the ground, sheltering birds and signs of recent use immediately before clearing.
  • Do not clear beyond marked limits without approval from the fauna spotter catcher and environmental officer.

During habitat disturbance: Daily controls and machinery interface

Use a controlled, staged clearing process that gives birds a chance to move into retained habitat. The fauna spotter catcher must have authority to pause machinery and must work in direct communication with operators.

Complete a pre-start fauna inspection each day before machinery enters the work area.

Use a fauna spotter catcher who is appropriately authorised for the state or territory and competent in identifying, handling and releasing native birds.

Clear in short, observable stages from the least disturbed edge towards retained habitat so mobile fauna can move away from machinery.

Keep machinery speed low and stop immediately when the fauna spotter catcher signals a fauna risk.

  • Maintain a daily exclusion-zone check and repair damaged fencing before work continues.
  • Keep the spotter catcher within a position that provides a clear view of the active clearing area and a safe route away from machinery.
  • Do not allow machinery to operate while the spotter catcher is investigating dense cover, a nest or a suspected animal location.
  • Record the date, crew, machinery, clearing area, weather, inspections, incidents and stop-work events.

During habitat disturbance: Habitat feature handling

Inspect dense shrubs, low bushes, flood debris and other ground-level cover before removal because the species nests close to the ground and may shelter within low vegetation.

Retain shrubs and ground cover wherever they fall inside an approved exclusion zone.

Do not disturb a suspected nest, eggs or dependent young until the fauna spotter catcher and project ecologist have assessed it and applied the approved procedure.

Although this species is not dependent on tree hollows, inspect logs, rocks, debris and burrows for sheltering fauna before moving them.

  • Lower or move vegetation in stages rather than pushing large areas of shrubland into retained habitat.
  • Stop work if a nest, eggs, dependent young or an occupied shelter is found.
  • Do not burn, mulch or bury habitat material until the fauna management plan confirms that it has been checked and can be treated safely.

During habitat disturbance: If a bird is found

Stop the relevant activity and allow the fauna spotter catcher to assess the bird without chasing it through dense cover.

Do not handle the bird unless handling is necessary for its welfare, safety or an approved relocation procedure.

Only an appropriately authorised person may capture, handle or relocate the bird, and the handling method must follow the approved fauna management plan.

Release an uninjured bird into nearby retained habitat that is suitable, connected and outside the active work area, unless the project ecologist directs otherwise.

Take an injured bird to an approved wildlife carer or veterinarian as soon as practicable and record the transfer.

  • Use a ventilated, secure container only when temporary containment is necessary and keep the bird quiet, shaded and protected from heat, cold and excessive handling.
  • Do not relocate a bird across roads, into isolated habitat or into habitat that is being cleared.
  • Treat an active nest, eggs, dependent young, repeated bird presence or an injured animal as a stop-work trigger until the authorised person and project ecologist provide direction.
  • Notify the environmental officer and relevant regulator where the approval, permit or fauna management plan requires notification.

After habitat disturbance: Post-clearance checks

Confirm that clearing has not left animals, active nests or unsafe isolated habitat in the work area. Maintain the controls that protect retained shrubland throughout construction and operation.

Complete a systematic inspection of the cleared area, remaining shrubs, debris piles, access edges and exclusion fencing after each clearing stage.

Check for injured, trapped or displaced birds and arrange authorised care or release before the area is handed to the construction crew.

Remove temporary fauna traps and hazards only after the fauna spotter catcher confirms that no animal remains at risk.

  • Record the inspection date, area checked, personnel, findings, fauna incidents, releases and unresolved actions.
  • Repeat checks after wind damage, flooding, fire, earthworks or any event that changes retained habitat or fencing.

After habitat disturbance: Monitoring and reporting

Monitor retained shrubland for Western Grasswrens using early morning area searches and, where appropriate, broadcast surveys during the approved monitoring period.

Compare detections, habitat condition and connectivity with the pre-disturbance baseline.

Report any new record, nest, injury, mortality, relocation or breach of an exclusion zone to the project environmental officer and relevant wildlife database.

  • Keep retained habitat free of construction materials, vehicle encroachment, weeds and avoidable disturbance.
  • Maintain exclusion fencing and signs until the environmental officer confirms that the risk from construction has ended.
  • Provide the regulator with monitoring, incident and rehabilitation reports where required by an approval or permit.
  • Assess whether offsets or other approved compensatory measures are required for unavoidable impacts to listed habitat.

Rehabilitation actions: Restore habitat structure

Rehabilitate disturbed areas to recreate connected, low dense shrub cover used by the Western Grasswren for feeding, shelter and nesting. Set measurable targets for vegetation establishment and fauna use.

Use locally appropriate saltbush, bluebush and other chenopod species that match the pre-disturbance community and the site's soil and rainfall conditions.

Re-establish dense, low shrub cover rather than an open grass-only surface, because the species is associated with chenopod shrublands and low bushes.

Reinstate suitable natural ground cover, including retained or salvaged woody material where it can be placed safely and without creating a fire or pest hazard.

Reconnect rehabilitated patches with retained shrubland wherever the project footprint has interrupted habitat continuity.

  • Use local provenance seed or tubestock where available and permitted.
  • Protect plantings from grazing, vehicle damage and weed competition until established.
  • Do not use a generic tree planting target as the primary success measure for this species.

Rehabilitation actions: Manage threats

Control weeds that reduce the density and structural diversity of saltbush, bluebush and other low shrubs.

Manage introduced predators and grazing pressure where they are identified as project impacts or as barriers to habitat recovery.

Plan fire management so that retained and rehabilitated shrubland is not exposed to avoidable high-intensity fire, while complying with local fire legislation and ecological fire advice.

Prevent construction waste, stockpiles and ongoing vehicle access from re-entering rehabilitated habitat.

  • Inspect rehabilitation areas after rainfall, fire, grazing events and major storms.
  • Repair erosion and replace failed plants during the establishment period.
  • Use a site-specific predator, weed and fire plan where monitoring identifies a material risk to the species or its habitat.

Rehabilitation actions: Monitor success

Monitor plant survival, shrub cover, habitat connectivity and weed or grazing pressure against the pre-clearance condition.

Use early morning area searches and, where appropriate, broadcast surveys to check whether Western Grasswrens return to rehabilitated or connected retained habitat.

Treat successful habitat establishment as a combination of persistent low shrub cover, functional connectivity and acceptable fauna risk, not as planting completion alone.

  • Set monitoring dates, responsible personnel, methods and completion criteria in the rehabilitation plan.
  • Map rehabilitation outcomes and submit confirmed fauna records to the relevant state or territory wildlife database.
  • Investigate and rectify failed rehabilitation where shrub cover, connectivity or fauna use does not meet the approved success criteria.

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