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Eastern Hooded Scaly-foot (Pygopus schraderi)

The Eastern Hooded Scaly-foot is a primarily nocturnal, legless lizard of native temperate grasslands, ranging across inland Queensland and New South Wales and reaching northern Victoria. In Victoria it is known from only a few Northern Plains locations, where clearing, fragmentation and disturbance of native grassland can remove feeding areas and soil refuges.

Conservation status

Victoria, Flora and Fauna Guarantee Act 1988: Critically endangered.

Breeding season

Eastern Hooded Scaly-foot mates from late winter into summer, lays eggs in spring or early summer, and is generally inactive during winter. Clearing risk is highest where soil refuges, nest sites or concealed animals may be affected from late autumn through early autumn, with additional risk during the laying and hatching periods.

Reproductive mode: Oviparous. The species lays eggs.

Clutch size: Usually 2 eggs, occasionally 1 or 3.

Incubation: 66 to 77 days. A captive breeding record reports 64 days at 30°C.

Size at hatching: 80 mm total length in a captive breeding record.

Age at maturity: Not recorded.

Nest or egg sites: Soft soil, soil cavities and soil beneath stone slabs. In captivity, eggs have been laid on moist sand or other moist substrate.

Breeding frequency: Usually once a year in the wild. Captive females may produce multiple clutches when conditions and food supply are suitable.

Confirm timing locally before works, as rainfall and temperature may alter mating, laying, incubation, surface activity and winter sheltering across the species' Australian range.

  • Mating: Mating is reported from August to March. The broader mating period may extend into May, but the best-supported planning period is August to March.
  • Gravid females: Gravid females have been reported in January and February. Females may be concealed in soil refuges during this period.
  • Egg laying: Eggs are laid once a year in spring or early summer. Captive observations record laying usually from October to January, with a typical clutch of 2 eggs.
  • Incubation: Eggs remain in the nest or soil for about 66 to 77 days. Eggs laid from October to January may therefore remain present from October through March, depending on laying date and temperature.
  • Hatchlings: Hatching is expected about 64 to 77 days after laying. For eggs laid from October to January, hatchlings may occur from December to March, with the exact timing affected by temperature.
  • Active period: The species is mainly nocturnal and may be active by day in mild weather in Victoria. The active period is mapped here as September to May, based on reported winter inactivity and activity through the breeding period.
  • Winter inactivity: The species is thought to be inactive during winter, particularly from June to August. Animals may remain below ground or in soil crevices and cannot reliably escape machinery during clearing.
  • Highest clearing risk: Risk is highest from June to March because winter-inactive animals may be trapped in refuges, while eggs, gravid females and hatchlings may be present from October to March. Retain soil cavities, spider burrows, crevices, raised ant nests and bare ground between tussocks throughout this period.

Identification

This is a legless lizard with a reddish-brown body and a patterned back and tail. It is most likely to be encountered during nocturnal searches in structurally intact native grassland.

The body is legless and generally reddish-brown. The back and tail have intricate patterning, while dark markings around the head provide camouflage among grass tussocks, lichen-encrusted soil and bare ground.

The species is primarily nocturnal and is most often encountered by spotlighting on warm nights.

Identification: Size and similar species

Body length, tail length and weight are not provided in the supplied documents.

It belongs to the scaly-foot group of legless lizards. The supplied sources do not provide a diagnostic comparison with other Australian legless lizards, so identification should use the combination of reddish-brown colouration, intricate dorsal and tail patterning, dark head markings, habitat and nocturnal behaviour.

Body size: Not reported in the supplied documents

Weight: Not reported in the supplied documents

Identification: Field signs

Potential encounter locations include small bare patches between grass tussocks, particularly near spider burrows, soil crevices and raised ant nests.

No species-specific tracks, scats, calls, nests, sloughs or eyeshine characteristics are described in the supplied documents. A live animal or a well-documented photograph is therefore the most reliable field record.

  • Search warm nights by spotlighting, with attention to open spaces between tussocks and the edges of soil refuges.
  • Record the exact microhabitat when an animal is found, including bare ground, tussock cover, spider burrows, soil crevices and raised ant nests.

Distribution: National range

The species ranges across inland Queensland and New South Wales, with northern Victoria forming the southern edge of its range. Victorian records are concentrated in a small number of native grassland sites on the Northern Plains.

The Eastern Hooded Scaly-foot ranges across much of inland Queensland and New South Wales. In Victoria it occurs at the edge of its range in the north of the state.

The supplied documents do not provide a complete list of Queensland and New South Wales bioregions or a mapped national boundary.

States reported: Queensland, New South Wales and Victoria

Victorian bioregion: Northern Plains native grasslands

Distribution: Victorian strongholds

In northern Victoria, the species is known from just a few locations, including high-quality grasslands on the Northern Plains.

The documented Northern Plains grassland area includes the Patho Plains, Lower Avoca Plains, Terrick Terrick Grasslands and Bael Bael Grasslands. The sources identify these as important grassland areas, but do not confirm that the species occurs at every named site.

Known Victorian distribution: Just a few locations at the northern edge of the species' range

Grassland habitat lost in the Northern Plains: An estimated 99.7% destroyed by intensive irrigated and dryland agriculture

  • Treat intact native grassland remnants in the Northern Plains as potential habitat, particularly where they retain low, open vegetation, bare ground and soil refuges.
  • Do not assume that a small or isolated grassland patch is unoccupied solely because the animal is not detected during one search.

Distribution: Population information

The supplied documents do not provide a national population estimate, Victorian population estimate, abundance estimate or measured population trend for the Eastern Hooded Scaly-foot.

The Victorian population is described as highly restricted and exposed to habitat fragmentation. Fragmented populations may experience genetic isolation where animals cannot cross modified land.

National population size: Not reported in the supplied documents

Population trend: No species-specific trend is reported

Victorian status: Critically Endangered

Habitat: Habitat types

The species is associated with native, naturally treeless temperate grasslands, especially where vegetation structure provides both open movement space and cover. Habitat quality depends on the condition and continuity of the grassland remnant, not simply on the presence of grass.

In Victoria, the species occurs in Northern Plains Grasslands, a dry native temperate grassland community on red-brown alluvial heavy clay soils.

The grasslands are bordered by semi-arid ecosystems further inland. The supplied documents do not give an elevation range or a quantified climate limit.

Soil: Primarily red-brown alluvial heavy clay soils in the Northern Plains

Plant richness: Up to 30 native plant species per 100 square metres in Northern Plains grassland

Elevation limit: Not reported in the supplied documents

  • Native grassland with perennial wallaby-grasses, spear-grasses and spider grass.
  • Grassland interspersed with perennial herbs, forbs and, in some places, low chenopod saltbushes.
  • Large, structurally intact and relatively well-connected remnants.

Habitat: Structural features

The structure of the grassland appears more important than the identity of individual plant species. Spaces between tussocks are a key habitat feature for grassland fauna.

Suitable sites can contain a mixture of low, open vegetation, taller grass patches, bare ground, lichen or cryptogamic soil crust, soil cracks and raised ant nests.

  • Retain native grass tussocks and the open spaces between them.
  • Protect lichen or cryptogamic soil crust, bare patches, soil cracks and raised ant nests from vehicle traffic and compaction.
  • Maintain habitat connectivity between occupied or potentially occupied grassland remnants.

Foraging habitat: Diet

The Eastern Hooded Scaly-foot forages at night on the ground and among grassland microhabitats. It uses open patches between tussocks and areas close to invertebrate refuges.

The documented diet consists primarily of spiders and other invertebrates.

No particular food plant is identified because the species is an animal predator rather than a herbivore.

Main prey: Spiders and other invertebrates

Foraging period: Primarily at night, especially on warm nights

  • Protect ground-dwelling invertebrate habitat, including soil crevices, spider burrows, bare ground and intact tussock structure.
  • Avoid broad-spectrum pesticide use in native grassland unless it has been assessed for effects on the species' invertebrate prey and habitat.

Foraging habitat: Foraging areas

Individuals are typically located on small patches of bare ground among grassland vegetation, often close to spider burrows, soil crevices and raised ant nests.

The supplied documents do not provide a foraging range, home-range size, prey density or movement distance.

Foraging range: Not reported in the supplied documents

  • Inspect bare ground between tussocks and the margins of grass clumps during warm-night spotlighting.
  • Include adjacent soil refuges and the surrounding tussock structure in the area protected around a detection.

Breeding habitat: Breeding biology

Breeding information in the supplied material comes from captive observations. These observations identify an October to January laying period and show that females place eggs on moist sand in a laying container.

In captive observations, females produced at least three clutches in a season when conditions and food supply were suitable. Eggs were usually laid between October and January.

Eggs were laid directly on top of moist sand rather than being buried or concealed. Captive incubation in moist sphagnum moss at 28 to 29 degrees Celsius took about 60 to 70 days.

The supplied documents do not establish whether captive breeding timing, clutch frequency or incubation conditions are the same in wild Victorian populations.

Breeding or laying season: Usually October to January in captive observations

Clutch size: A photographed clutch contained two eggs; females produced at least three clutches in a season in captive observations

Incubation: About 60 to 70 days at 28 to 29 degrees Celsius in moist sphagnum moss under captive conditions

Age at maturity: Not reported in the supplied documents

Lifespan: Not reported in the supplied documents

Breeding habitat: Breeding habitat

Wild nesting habitat is not described in the supplied documents. The documented captive laying behaviour indicates that eggs may be placed in a shallow, moist substrate rather than buried.

For field protection, retain the grassland structure and undisturbed soil features associated with adults, including tussock gaps, bare ground, soil cracks, spider burrows and raised ant nests.

  • Avoid disturbing potentially occupied native grassland during the October to January laying period.
  • If an egg-laying site or gravid female is found during works, stop disturbance in the immediate area and obtain advice from the relevant state wildlife authority or project ecologist.

Sheltering habitat: Known refuges

The species shelters in small ground-level refuges within native grassland. These features can be subtle and are readily damaged by vehicles, grading, cultivation and soil compaction.

The species is typically found near spider burrows, soil crevices and raised ant nests. Small patches of bare ground among tussocks are also associated with detections.

The supplied documents do not provide refuge dimensions, burrow depth, shelter occupancy duration or evidence of use of logs, tree hollows or rock piles.

Refuge size: Not reported in the supplied documents

Documented refuge types: Spider burrows, soil crevices and raised ant nests

  • Retain spider burrows, soil crevices, raised ant nests and undisturbed ground between native tussocks.
  • Keep machinery, temporary access tracks, laydown areas and spoil stockpiles away from these features.
  • Do not fill, collapse or scrape suspected soil refuges during clearing or construction.

Sheltering habitat: Detection and handling context

Because the species is nocturnal and sheltering animals may remain below ground, a daytime search alone cannot demonstrate absence.

The supplied documents do not describe a species-specific capture method. Any capture, exclusion or relocation during works should be undertaken by appropriately authorised personnel under the relevant Victorian or other state requirements.

  • Use warm-night spotlighting as a targeted detection method where access and safety controls allow.
  • Treat intact grassland soil and refuge features as occupied or potentially occupied until an appropriately designed survey supports a different conclusion.

Threats: Habitat loss and fragmentation

The principal documented risks are loss and degradation of native grassland, fragmentation and disturbance of soil refuges. These risks are particularly relevant to clearing, earthworks, access tracks and infrastructure construction in northern Victoria.

More than 99% of Northern Plains Grasslands have been removed or substantially altered over approximately 180 years, with an estimated 99.7% of the grassland community destroyed by intensive irrigated and dryland agriculture.

Remaining patches are often small and isolated. Fragmentation can cause genetic isolation because specialised grassland fauna may be unable to cross modified land.

  • Avoid clearing native grassland, including apparently sparse areas with bare ground and low vegetation.
  • Keep project footprints, access routes, compounds and stockpiles within already disturbed areas where practicable.
  • Maintain connections between larger grassland remnants and avoid creating new barriers across native grassland.

Threats: Construction and vegetation management

The documented threats to grassland fauna include cultivation, over-grazing, under-grazing, weed invasion, slashing, inappropriate burning, trampling at inappropriate times and tree planting within native grassland remnants.

Construction disturbance can directly remove tussocks, bare-ground patches, lichen crust, soil cracks, spider burrows and raised ant nests used for foraging or shelter.

  • Fence or clearly mark retained native grassland before clearing and keep machinery outside the exclusion area.
  • Prevent soil compaction, grading, trenching, spoil placement and vehicle parking in retained habitat.
  • Plan slashing, burning and ecological grazing with the relevant land manager and avoid unplanned disturbance during the October to January laying period.
  • Control weeds without replacing native grassland with trees or dense non-native vegetation.

Threats: Other threats and evidence gaps

Predation is listed among the threats to Northern Plains grassland fauna, but the supplied documents do not identify particular predator species or quantify predation of Eastern Hooded Scaly-foot.

Road mortality, disease and hydrology change are not identified as species-specific threats in the supplied documents. Their significance should be assessed for each project where roads, drainage, flooding or altered soil moisture are proposed.

  • Record and report any live animals, carcasses or predation evidence found during works.
  • Assess whether new roads, drainage works or changes to surface water could remove or isolate suitable native grassland and soil refuges.

Survey methodology: 1. Habitat assessment and daytime searches

Survey effort should target native grassland remnants and other sites that retain the species’ preferred structure. The Eastern Hooded Scaly-foot is primarily nocturnal and is most likely to be detected on warm nights, often near bare ground, soil cracks, spider burrows and raised ant nests.

Map native grassland patches before works, including tussocks, bare ground, lichen-encrusted soil, soil cracks, spider burrows and raised ant nests.

Inspect likely shelter sites during the day without disturbing soil features. Record the location and condition of each feature for later protection and targeted night searches.

Give priority to large, structurally intact and connected grassland remnants, because small isolated remnants may not support viable populations.

Survey methodology: 2. Nocturnal spotlighting

Undertake spotlighting on warm nights when the species is active and invertebrate prey is likely to be available.

Search low, sparse native grassland and small patches of bare ground between tussocks, particularly around spider burrows, soil crevices and raised ant nests.

Use slow, quiet searches and record all observations, including animals seen moving through tussocks or sheltering at the edge of bare ground.

The supplied documents do not specify the required number of nights, search hours, transect length, transect spacing or weather thresholds. Set those parameters in the project survey plan with the relevant state regulator or species specialist.

Survey methodology: 3. Detection and identification records

Record the date, start and finish time, weather, ground conditions, search route, personnel, effort and GPS location for every search.

Photograph or otherwise document suspected animals where this can be done without capture or habitat disturbance, and record the animal’s behaviour and nearby habitat features.

Treat an absence from a single search as inconclusive, because the species is nocturnal, occurs at few known Victorian locations and can be difficult to detect among tussocks and soil features.

Survey methodology: Minimum effort and reporting

  • Obtain written advice on survey design before fieldwork where the project is in or near known Northern Plains grassland habitat, because the supplied documents do not provide a species-specific survey effort table.
  • Submit confirmed records, negative survey results where required, habitat mapping and all incidental observations to the relevant state wildlife database.
  • Retain raw survey data, GPS tracks, photographs, weather records and search effort in the project file.
  • Escalate any record or suitable habitat that may be affected by works to the project ecologist and relevant state wildlife authority before disturbance starts.

Before habitat disturbance: Avoid and minimise

Avoid disturbance to native grassland wherever practicable. Treat the species’ remaining habitat as a high conservation constraint, particularly in northern Victoria where it is known from only a few locations.

  • Retain native grassland, especially larger remnants that are structurally intact and connected to other remnants.
  • Retain low, sparse vegetation, spaces between tussocks, patches of bare ground, lichen crust, soil cracks, spider burrows and raised ant nests.
  • Avoid cultivation, soil stripping, grading, stockpiling, vehicle access, slashing and tree planting within retained grassland habitat.
  • Design the works footprint to maintain movement between retained grassland patches and avoid creating isolated habitat pockets.

Before habitat disturbance: Approvals and project planning

  • Confirm the species’ legal status for the project jurisdiction before works begin; it is listed as Critically Endangered in Victoria and is recorded in the supplied project information as not listed under the EPBC Act.
  • Obtain any required state wildlife permits, authorisations and approval conditions before surveying, capture, handling or habitat disturbance.
  • Refer the project under the EPBC Act if another nationally listed matter may be affected, or if the species’ legal status changes or new advice identifies a relevant Commonwealth listing trigger.
  • Prepare a fauna management plan that defines survey methods, exclusion zones, spotter catcher authority, stop-work triggers, handling arrangements, release sites and reporting requirements.

Before habitat disturbance: Site preparation

  • Complete the pre-clearance survey before machinery enters native grassland or disturbs soil features.
  • Mark retained habitat, soil cracks, spider burrows, raised ant nests, bare-ground patches and access routes on plans and in the field.
  • Install exclusion fencing where it can protect retained grassland and prevent machinery, vehicles and workers entering marked habitat.
  • Stage clearing so that the smallest practicable area is opened at one time and retained habitat remains connected during the works.

During habitat disturbance: Daily controls and machinery interface

Use a spotter catcher and machinery team that understand the species’ small, legless form and its association with grassland shelter features. Stop work when an animal or likely occupied shelter is found.

  • Brief all workers each day on the exclusion zones, habitat features, access routes, stop-work process and the person authorised to direct machinery.
  • Have the fauna spotter catcher inspect the active work area before clearing, soil disturbance, vehicle movements and material placement each day.
  • Keep machinery outside marked habitat until the spotter catcher has released the area for work.
  • Use staged, slow clearing that allows the spotter catcher to inspect exposed ground, tussocks, cracks, burrows and ant nests before the next section is disturbed.
  • Do not allow workers to handle, chase or collect the species unless they are authorised under the project’s wildlife approvals and fauna management plan.

During habitat disturbance: Habitat feature handling

  • Protect soil cracks, spider burrows, raised ant nests, bare-ground patches and lichen crust wherever they occur within or beside the work area.
  • Do not fill, collapse, drive over or unnecessarily expose burrows and soil crevices that may provide shelter.
  • Retain native tussocks and the spaces between them in exclusion zones, because vegetation structure is an important habitat feature for Northern Plains grassland fauna.
  • Treat logs, rocks, hollows, wetlands and nest boxes according to the approved fauna management plan, but do not assume that these features replace the species’ documented grassland shelter features.

During habitat disturbance: Animal found, injury and stop work

  • Stop work in the immediate area if an Eastern Hooded Scaly-foot is found, and keep machinery, workers and vehicles clear while the spotter catcher assesses the animal.
  • Do not handle the animal unless the spotter catcher is authorised and handling is permitted by the relevant approval or permit.
  • If capture is authorised, move the animal only the minimum distance needed to nearby retained habitat with suitable tussocks, bare ground, soil cracks or other documented shelter features.
  • Do not release the animal into unsuitable landscaped areas, cultivated ground or isolated habitat.
  • Place an injured animal in an appropriate secure container and transfer it promptly to a veterinarian or authorised wildlife carer under the project’s approved procedure.
  • Stop work if an animal is repeatedly found, if suitable occupied shelter cannot be cleared safely, or if exclusion fencing, survey coverage or handling arrangements fail.

During habitat disturbance: Records and incident reporting

  • Record every animal sighting, capture, handling event, release location, injury, mortality, habitat feature affected, machinery activity and stop-work event.
  • Photograph the animal and the surrounding habitat where this can be done without delaying safe management or causing further disturbance.
  • Notify the project ecologist and relevant wildlife authority of a confirmed record, injury, mortality or unauthorised disturbance in accordance with approval conditions.

After habitat disturbance: Post-clearance checks

Post-clearance work must confirm that no animals or shelter features were missed and that retained grassland remains protected. Monitoring should focus on habitat condition as well as records of the species.

  • Inspect the cleared boundary and retained habitat for animals, damaged tussocks, collapsed soil cracks, disturbed spider burrows, damaged ant nests and vehicle encroachment.
  • Complete a final fauna inspection before removing exclusion fencing or allowing follow-up works in areas that were not fully cleared.
  • Repair fencing and reinstate exclusion zones if construction traffic or materials have entered retained grassland.

After habitat disturbance: Monitoring and controls

  • Monitor retained grassland for vegetation height and density, bare-ground patches, spaces between tussocks, soil cracks, spider burrows and raised ant nests.
  • Use repeat warm-night spotlighting where required by the approval or fauna management plan, and compare effort and detection conditions between surveys.
  • Maintain access controls, stock controls and machinery exclusion until the project ecologist confirms that rehabilitation and monitoring requirements are complete.

After habitat disturbance: Reporting and offsets

  • Provide the land manager, project approval authority and relevant state wildlife database with survey results, incidental records, handling outcomes, mortality records, mapped habitat and rehabilitation results.
  • Report any residual impact and implement approved offsets or conservation measures where required by the planning or environmental approval.
  • Record whether the project retained connectivity and the documented grassland shelter features needed by the species.

Rehabilitation actions: Restore habitat structure

Rehabilitation should restore native grassland structure rather than create a generic grassed area. The target condition is a treeless, structurally diverse grassland with bare-ground gaps and soil shelter features.

  • Re-establish native perennial grassland using locally appropriate native grasses, herbs and forbs from the surrounding community.
  • Aim for a varied structure that includes tussocks, low sparse vegetation and open spaces between tussocks, rather than an even, dense grass cover.
  • Recreate or protect patches of bare ground and lichen crust where this is consistent with the surrounding grassland community.
  • Do not plant trees or dense shrubs in treeless native grassland rehabilitation areas.

Rehabilitation actions: Reinstate shelter features

  • Protect existing soil cracks, spider burrows and raised ant nests during rehabilitation and avoid unnecessary soil compaction.
  • Reinstate disturbed soil contours and surface conditions so that cracks and small shelter spaces can develop naturally.
  • Use logs, rocks, hollows or nest boxes only where they are appropriate for other affected fauna, because the supplied documents identify grassland tussocks, bare ground, soil cracks, spider burrows and ant nests as the relevant Eastern Hooded Scaly-foot shelter context.

Rehabilitation actions: Weeds, grazing, fire and predators

  • Control weeds without reducing native tussock cover or damaging soil cracks, burrows and ant nests.
  • Use grazing or burning only under an ecological management plan that maintains the required height and density of native grassland vegetation and protects fauna from trampling at unsuitable times.
  • Prevent over-grazing, under-grazing, inappropriate burning, slashing, trampling and tree planting within retained or rehabilitated grassland.
  • Manage introduced predators and other threats where they are identified through the project risk assessment and monitoring.

Rehabilitation actions: Success measures and monitoring

  • Set measurable rehabilitation targets for native plant cover, tussock structure, spaces between tussocks, bare-ground patches, soil cracks and absence of weed invasion.
  • Inspect rehabilitation after establishment and during subsequent warm seasons, using the same mapped areas and survey methods where repeat detection monitoring is required.
  • Treat rehabilitation as incomplete until the agreed habitat structure is established, connectivity is maintained and any required Eastern Hooded Scaly-foot monitoring and reporting has been completed.

Sources