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Pictorella Mannikin (Heteromunia pectoralis)

The Pictorella Mannikin is a small northern Australian grassfinch that uses open savanna, dry grassland, semi-arid shrubland and wetland fringes. It is highly nomadic and may occur well outside its usual range after favourable rainfall, so clearing surveys should allow for temporary use of apparently vacant habitat and should check grass hummocks, drainage lines, waterholes and recently burnt ground.

Conservation status

Northern Territory, Territory Parks and Wildlife Conservation Act 1976: Near threatened.

Breeding season

Timing varies across northern Australia because rainfall, grass seed and water availability drive movements and breeding. The pattern below combines documented Queensland breeding records, juvenile observations and the short moulting window recorded in the north-west.

The seasonal pattern is indicative rather than a fixed national breeding calendar. Regional rainfall and irruptive movements can change when birds occur at a project site.

  • Breeding: Carrying nesting material and breeding were recorded in March and April in the Townsville and Georgetown districts.
  • Young: Juveniles were recorded among birds visiting Willet Swamp in May, and probable young were recorded near Diamantina National Park in July. Juveniles also formed a substantial part of catches in September, October and December in the north-west study.
  • Nomadic movement and irruptions: The species is highly nomadic and may appear hundreds of kilometres outside its usual range. Rainfall, water availability and grass seed supply influence local occurrence, so movement can occur in any season.
  • Primary moult: In the north-west study, birds with growing primary feathers were recorded in September, October and December, with mid to late primary moult in October. This followed the main nesting period.
  • Highest clearing risk: Risk is highest from March to July because breeding, nesting material collection and dependent or recently fledged young have been recorded during this period. Additional checks are warranted from September to October where the species is present, because juveniles and active moult have been recorded then.

Identification

The Pictorella Mannikin is a small, short-tailed finch with a buff-brown and grey body. It is most readily identified by the contrasting black face disc and white, scaly breast pattern.

Look for a compact finch with an upright stance, a grey bill and a distinctive white scaly breastplate on the chest. The wing coverts have small white tips that may be visible in flight or when the bird moves its wings while perched.

Length: Up to 120 mm.

Wingspan: 56 to 63 mm.

Weight: 13 to 15 g.

Identification: Distinguishing features

The black face disc, grey bill and white scaly breast distinguish it from other small northern Australian finches and mannikins. Identification should focus on the breast pattern rather than general brown or grey plumage, because the species may occur in mixed finch flocks.

  • Check the white scaly breastplate and black face disc together.
  • Check the grey bill and short tail.
  • Record flock composition where possible, as Pictorella Mannikins have been observed with Plum-headed, Chestnut-breasted, Black-throated and Zebra Finches.

Identification: Field signs and sex

The species forages mainly on the ground, so repeated small finch activity in grass seed patches, especially near water, can be a useful field clue. Dome-shaped nests may be found within long grass or low bushes, including grass hummocks. The supplied sources do not describe tracks, scats, calls, eggshells, eyeshine or sex-specific plumage in enough detail for reliable field use.

  • Search dense grass tussocks, grass hummocks and low bushes for dome-shaped nests.
  • Treat small finch flocks at waterholes or seeding grass patches as potential Pictorella Mannikin habitat.
  • The study identified sex in the field where gender-specific plumage was sufficiently clear, but the supplied documents do not provide a diagnostic description of male and female plumage.

Distribution: National range

The Pictorella Mannikin occurs across northern Australia, with records from Western Australia, the Northern Territory and Queensland. Its distribution is irregular because birds can move widely in response to rainfall, water availability and grass seed supply.

The usual range extends across northern Australia, broadly south to about 20 degrees south, but the species has also been recorded farther south in central and western Queensland during irruptions. Records include the Kimberley and Pilbara regions of Western Australia, the northern and eastern parts of the Northern Territory, and north-eastern, western and central Queensland.

  • Western Australia: Kimberley, including eastern, central and southern parts of the study area, and records near Broome, Pardoo Creek and Karratha.
  • Northern Territory: north-eastern and central areas, including records in the Davenport Range and near Cresswell Downs.
  • Queensland: Cape York and north-eastern Queensland, the Townsville and Georgetown districts, and inland areas including Diamantina, Bladensburg and Winton.

Distribution: Strongholds and temporary concentrations

The Kimberley appears to be an important area for the species, although numbers varied sharply between years. Large numbers were recorded at several Kimberley waterholes in 1996 and 1997, while the species was infrequent in 1999. Inland Queensland sites also supported temporary concentrations, including an observation of about 100 birds near Diamantina National Park.

Largest reported local flock: About 100 birds at a site near Diamantina National Park.

Irruption distance: Birds have appeared hundreds of kilometres beyond their usual range.

  • Check waterholes and drainage lines in the Kimberley, particularly during dry periods when birds may aggregate at limited drinking sites.
  • Check inland Queensland lignum, creekline and wetland sites after good rain.
  • Do not treat absence from a single survey or waterhole as evidence that the species is absent from the wider project area.

Distribution: Population and status

A national population estimate is not provided in the supplied documents. Historical monitoring found strong year-to-year variation, and the species was considered of conservation concern because of possible declines, although its current national trend remains unclear.

EPBC Act: Not listed.

Northern Territory: Near Threatened in the supplied assessment.

Western Australia: Reported as Near Threatened by the supplied species guide.

Queensland: Reported as Least Concern by the supplied species guide.

Population estimate: Not available in the supplied documents.

Habitat: Habitat types

The species uses open, grassy country rather than dense forest. Habitat use changes with rainfall, seed availability, water distribution and recent fire history.

Recorded and described habitat includes dry savanna, subtropical or tropical dry lowland grassland, semi-arid shrubland, open grassy woodland and wetland fringes. Specific records include lignum, arid drainage lines with gidgee, sand-ridge country, lush creekline vegetation after rain and open savanna.

  • Open tropical savanna with a substantial native grass layer.
  • Dry lowland grassland and open grassy woodland.
  • Semi-arid shrubland, lignum and gidgee drainage lines.
  • Creeklines, wetland fringes, waterholes and other sites retaining water or green vegetation.

Habitat: Structural features

The most useful habitat features are seeding native grasses, patches of long grass, grass hummocks, low shrubs, drainage lines and nearby drinking water. The species may also use recently burnt ground where fresh grass seed is available.

  • Map native grass patches and grass hummocks before clearing.
  • Retain connected grass cover around drainage lines, wetland margins and waterholes where practicable.
  • Record fire age and grass seed availability, not just vegetation type.
  • Avoid assuming that modified or sparsely vegetated areas are unsuitable when they contain seeding grasses and access to water.

Habitat: Climate and elevation

The supplied documents associate the species with the monsoonal tropics and semi-arid inland Australia. They do not provide a reliable elevation limit.

Elevation limit: Not reported in the supplied documents.

Rainfall response: Rainfall and the resulting availability of water and grass seed appear to influence movements and local abundance.

Foraging habitat: Diet and feeding method

Pictorella Mannikins are primarily ground-feeding granivores. They can travel widely to track food, water and nesting resources, so foraging habitat may extend well beyond the area where birds roost or nest.

The diet is predominantly seed from native grasses. Birds usually drop to the ground to feed, but may collect seed directly from grass stems during the wet season. Small invertebrates are eaten occasionally.

  • Search the ground beneath seeding grasses for feeding birds and disturbed seed heads.
  • Check grass stems during the wet season, when birds may feed directly from plants.
  • Record grass species and seed availability where a project may remove or alter foraging areas.

Foraging habitat: Foraging areas and mobility

The species ranges widely on a daily basis and is described as highly nomadic, with seasonal movements linked to food, water and nesting resources. It is particularly irruptive and has been recorded far outside its usual range.

Daily movement: Wider-ranging than several sympatric finches, although a specific daily distance is not given.

Longer-distance movement: Irruptions may place birds hundreds of kilometres beyond their normal range.

  • Survey both the development footprint and nearby grassland, drainage lines and water sources.
  • Inspect recently burnt areas where native grasses are seeding.
  • Repeat surveys across suitable habitat when rainfall has been followed by grass growth or when birds are reported nearby.

Breeding habitat: Breeding biology

Breeding habitat consists of dense grass or low shrub cover suitable for a concealed dome nest, with nearby seed and water resources. Breeding records show that timing can vary between regions and years.

Pairs are described as monogamous. Dome-shaped nests are built within long grass or low bushes, and the species has also been described as nesting in grass hummocks. Breeding has been recorded in March and April in Queensland, while juvenile observations from inland Queensland show that young may still be present in May and July.

Breeding season: Recorded in March and April in Queensland; the broader breeding period is not fully defined in the supplied documents.

Clutch size: Usually 4 to 6 eggs.

Eggs: White or bluish-white.

Incubation: Not reported in the supplied documents.

Age at maturity: Not reported in the supplied documents.

Lifespan: Not reported in the supplied documents.

Breeding habitat: Breeding habitat features

Retain long grass, grass hummocks and low bushes in areas with access to seeding grasses and water. Breeding habitat may occur within open savanna, wetland margins, drainage lines and creekline vegetation.

  • Search dense grass and low shrubs for dome nests before clearing.
  • Maintain a buffer around active nests in accordance with project fauna procedures and applicable state requirements.
  • Avoid removing all long grass and grass hummocks from otherwise suitable open habitat.
  • Treat March to July as a period requiring additional checks because breeding and dependent young have been recorded during these months.

Sheltering habitat: Nests and cover

The supplied documents provide information mainly on nesting cover rather than separate roosting or refuge structures. Shelter is likely to be associated with dense grass, grass hummocks, low bushes and thicker vegetation near feeding and drinking sites.

Breeding nests are dome-shaped and occur within long grass or low bushes. The species has also been reported to nest in grass hummocks. No nest dimensions are provided.

Nest form: Dome-shaped.

Nest location: Long grass, low bushes and grass hummocks.

Nest dimensions: Not reported.

  • Inspect grass tussocks, hummocks and low shrubs before vegetation removal.
  • Retain patches of dense ground cover around known feeding and drinking sites where practicable.
  • Record nest locations and the surrounding grass structure, not only the nest itself.

Sheltering habitat: Other refuges

The supplied sources do not identify separate roost trees, hollows, burrows, caves or refuge dimensions for this species. In open country, dense grass and low vegetation are the best-supported shelter features.

  • Give priority to retaining dense grass and low shrub patches within open savanna and drainage-line habitat.
  • Check sheltering cover around waterholes because birds may concentrate there during dry periods.
  • Do not rely on tree hollows as a mitigation feature for this species, as the supplied documents describe a ground and grass-associated finch rather than a hollow-nester.

Threats: Clearing and habitat conversion

The main project risks are loss of seeding grass habitat, removal of nesting cover, altered water availability and disturbance during breeding or periods when birds concentrate at limited water sources. Evidence for species-specific impacts from roads, disease and predators is limited in the supplied documents.

Clearing of open savanna, native grassland, drainage lines, lignum, creekline vegetation and wetland fringes can remove feeding and nesting habitat. Historical work found that the species did not generally use the Ord River irrigation area as successfully as some other finches, suggesting that conversion to intensive irrigated land may reduce the suitability of native habitat for this species.

  • Avoid clearing long grass, grass hummocks and seeding native grass patches where practicable.
  • Map drainage lines, wetland fringes, waterholes and low shrub patches before finalising the clearing footprint.
  • Survey nearby habitat as well as the footprint because nomadic birds may use the project area temporarily.

Threats: Fire, grazing and food supply

The species may prefer recently burnt ground for foraging, but its wider ecology depends on the availability of native grass seed. Changes to fire and grazing regimes can alter grass structure and seed supply, and may therefore affect feeding habitat even where some ground cover remains.

  • Record recent fire history and the presence of seeding grasses during pre-clearing surveys.
  • Avoid applying a single fire prescription across all grassland habitat without checking its effect on seed production and nest cover.
  • Protect unburnt dense grass patches when recently burnt ground is widespread.

Threats: Water and hydrology

Pictorella Mannikins may aggregate at the few remaining waterholes during dry periods. Rainfall and the number of available drinking sites affect where finches are recorded, so drainage diversion, dewatering or loss of wetland and creekline vegetation may reduce access to water or change local concentrations.

Waterhole observation period: Finch drinking activity was surveyed between 0600 and 0800 in the Kimberley study.

  • Identify permanent and seasonal waterholes, springs, pools and drainage-line vegetation before works.
  • Avoid blocking access to existing drinking sites.
  • Use additional observations at dawn near water during dry conditions, when finches may be concentrated.

Threats: Fragmentation, roads and other pressures

The supplied documents do not quantify impacts from roads, vehicle strike, predators or disease for the Pictorella Mannikin. Fragmentation remains a practical concern where clearing removes connected grass, drainage-line and wetland habitat used by a highly mobile species.

  • Keep retained grass and drainage-line habitat connected where practicable.
  • Use fauna spotters during clearing in dense grass and low shrub habitat.
  • Record observations of injured or dead finches near roads and works areas so that project-specific risks can be assessed.
  • Manage waste, introduced predators and domestic animals under the project fauna management plan, even though species-specific rates are not provided in the supplied sources.

Survey methodology: 1. Habitat assessment and transects

Survey for Pictorella Mannikins should focus on open savannah, dry lowland grassland, semi-arid shrubland, open grassy woodland, wetland fringes and drainage lines with native seeding grasses. The species is highly mobile and irruptive, so absence during one visit does not demonstrate absence from a project area.

Map native grass cover, grass seed sources, recently burnt ground, wetland margins, drainage lines, waterholes, long grass, low shrubs and nearby retained habitat before selecting survey sites.

Search on foot during the cooler part of the morning, when finches are active and detection conditions are better. Record all finches, flock size, behaviour, feeding areas, water sources and flight direction.

Use repeated transects through suitable habitat and around wetland or drainage-line edges. A published Kimberley study used 1 hour timed walks covering about 1 to 3 km, but no national Pictorella Mannikin survey-effort standard is provided in the supplied documents.

Give extra attention to open ground with native grass seed, because Pictorella Mannikins forage mainly on the ground and often range widely in response to food, water and nesting resources.

Typical size: Maximum length about 120 mm

Mass: About 13 to 15 g; the study table gives a mean body mass of 15.0 g

Wing span: 56 to 63 mm

Foraging: Mainly native grass seed collected from the ground, with occasional small invertebrates

  • Record the survey date, start and finish time, weather, recent rainfall, fire history, vegetation condition, observer effort and the area searched.
  • Treat a sighting several hundred kilometres outside the usual range as possible evidence of an irruption, and verify the identification with photographs, sound recordings or an experienced ornithologist where practicable.

Survey methodology: 2. Dawn waterhole and wetland watches

Survey permanent and temporary waterholes, wetland fringes, creeklines and drainage pools, especially where surrounding grassland provides seed.

Conduct watches in the early morning. A Kimberley finch survey counted birds at waterholes between 0600 and 0800, when drinking activity was high.

Use concealed observation points at a sufficient distance to avoid changing the birds' approach to water. Count birds at one-minute intervals or use another consistent count method, and avoid double-counting flocks moving between water and feeding areas.

Repeat waterhole watches under different water conditions where the project may affect drinking sites. Counts can be misleading because birds concentrate at the few available waterholes in dry periods and disperse when more water is available.

Published Kimberley watch period: 0600 to 0800

Published timed-walk example: 1 hour, about 1 to 3 km

Detection feature: Pictorella Mannikins may gather at scarce drinking sites but disperse when surface water is widespread

  • Record the number of birds, flock size, direction of arrival and departure, time of drinking, associated finch species and whether birds use the site for feeding or nesting.
  • Do not infer population size from a single waterhole count, because the supplied Kimberley data showed substantial differences between years and rainfall conditions.

Survey methodology: 3. Targeted capture and breeding checks

Use mist nets or walk-in traps only where authorised, necessary and supervised by appropriately licensed and experienced personnel. The supplied study used these methods at waterholes and feeding sites, sometimes with call playback.

If capture is undertaken, check nets and traps continuously, remove birds almost immediately and keep handling time short, particularly in hot weather. The published study made most captures within two hours of dawn.

Inspect long grass, grass hummocks and low bushes for dome-shaped nests only where the work can be conducted without trampling or flushing breeding birds. The species has been recorded carrying nesting material and breeding in March and April in Queensland, but breeding timing can vary with rainfall and food availability.

Plan additional checks after substantial rain or during periods when birds are present in unusual numbers, because the species is highly nomadic and can irrupt outside its usual range.

Published study period: June 2004 to September 2012

Published Pictorella moult observations: Juveniles and adults with growing primaries were recorded in September, October and December, with mid to late moult in October

Published breeding records: Nesting material and breeding were recorded in March and April at Queensland sites

  • Do not use playback unless it is permitted by the relevant authority and justified in the survey design.
  • Record nest location, structure, activity, adults present, eggs or young, and the surrounding vegetation without touching the nest.
  • Release captured birds at the capture point unless an authorised wildlife professional directs otherwise.

Survey methodology: Minimum effort and reporting

  • Obtain and apply the current survey guidance, permit conditions and threatened-species requirements for the state or territory where the project occurs, because the supplied documents do not provide a nationally prescribed Pictorella Mannikin survey effort.
  • Use more than one survey visit where habitat is suitable, rainfall or fire has recently changed conditions, or the project could remove wetland-edge grassland, water sources or extensive native grass seed habitat.
  • Document the area searched, transect length, observation hours, waterhole watch hours, capture effort in net hours or trap nights, weather, recent rainfall, fire history, habitat condition, detection method and all negative results.
  • Submit verified records, including coordinates, date, flock size, photographs where available and survey effort, to the relevant state or territory wildlife database and the project environmental records system.
  • Report any state-listed record, nest, injury, mortality or unexpected concentration of birds to the approving authority and project environmental manager within the timeframe set by the approval or fauna management plan.

Before habitat disturbance: Avoid and minimise

The main project risk is removal or fragmentation of native grassland, open savannah, wetland-edge vegetation and access to drinking water. Plan around the species' mobility, its use of recently burnt ground and its potential to appear suddenly after rain.

Conservation status supplied: Not listed under the EPBC Act; Near Threatened in the Northern Territory

Habitat use: Dry savannahs, dry lowland grasslands, open grassy woodland and wetland fringes

Mobility: Highly mobile and nomadic at regional scales, with irruptive movements

  • Retain connected areas of open native grassland, savannah, semi-arid shrubland, low shrubs, long grass and wetland-edge vegetation within and adjoining the disturbance footprint.
  • Retain native grass seed sources, grass hummocks, drainage lines, waterholes and wetland margins that provide feeding, drinking or nesting habitat.
  • Avoid clearing broad areas of suitable habitat where the species is present, particularly when birds are feeding, drinking, carrying nesting material or attending young.
  • Keep retained habitat connected to nearby suitable areas, because Pictorella Mannikins can move widely in response to food, water and nesting resources and have been recorded hundreds of kilometres beyond their normal range.

Before habitat disturbance: Approvals and work planning

  • Check the current EPBC Act protected-matter information and referral requirements before works start, even though the supplied listing states that the species is not currently EPBC listed.
  • Check state or territory threatened-species listings, wildlife permits, scientific licences, animal ethics requirements and any local clearing controls before survey, capture, handling or relocation.
  • Prepare a fauna management plan that identifies suitable habitat, water sources, nesting areas, survey timing, clearing limits, fauna spotter catcher responsibilities, stop-work triggers and reporting contacts.
  • Schedule clearing outside periods of active nesting where practicable. Do not rely on the March to April Queensland breeding records as a national breeding season, because breeding is likely to respond to rainfall and food conditions.
  • Stage clearing so that birds can move into retained habitat and so that suitable grassland, wetland margins and drinking sites are not removed simultaneously.

Before habitat disturbance: Pre-clearance preparation

  • Complete a pre-clearance inspection of all suitable habitat immediately before works, with additional checks after rain or when birds are reported nearby.
  • Mark retained grassland, wetland margins, drainage lines, waterholes, long grass, low shrubs, nests and other habitat features on plans and in the field.
  • Install exclusion fencing or clearly marked no-go zones where they will protect retained grass, nesting areas, wetland edges or access routes to water.
  • Brief machinery operators and supervisors on the species' small size, ground-foraging behaviour, flock movements, likely escape routes and the authority of the fauna spotter catcher to pause work.
  • Confirm the nearest veterinarian, wildlife carer, wildlife authority and approved holding facilities before clearing begins.

During habitat disturbance: Daily controls and spotter catcher duties

Use active supervision during clearing and construction. Pictorella Mannikins are small ground-foraging birds that may be overlooked in grass or move rapidly between feeding areas and water.

  • Conduct a daily pre-start inspection of the work area, access tracks, stockpiles, grass tussocks, wetland edges and water sources before machinery enters.
  • Keep the fauna spotter catcher in direct communication with machinery operators and ensure the spotter can stop or pause work immediately.
  • Clear progressively from the disturbed area towards retained habitat, where safe, to give mobile birds a route away from machinery.
  • Use low vehicle speeds and avoid unnecessary driving through retained grassland, wetland margins, drainage lines and waterholes.
  • Recheck areas after breaks, overnight shutdowns, rain or changes in the work footprint, because birds can move into newly available feeding areas.

During habitat disturbance: Habitat features and fauna handling

Nesting structure: Dome-shaped nests in long grass or low bushes

Typical clutch: Usually 4 to 6 white or bluish-white eggs

Handling concern: Small body mass, about 13 to 15 g, means heat stress and injury can develop quickly

  • Stop before disturbing long grass, grass hummocks or low bushes that contain an active nest, and establish the exclusion area specified by the fauna management plan or approval.
  • Do not disturb nests, eggs or dependent young unless the relevant wildlife authority has approved the action and an authorised person is directing it.
  • Handle a Pictorella Mannikin only when authorised, trained and equipped to do so, and minimise restraint because the species weighs only about 13 to 15 g.
  • Allow healthy birds to leave unaided where possible, and release any captured healthy bird into nearby retained habitat at the capture location or another approved site directed by the fauna authority.
  • Do not relocate birds to an unapproved site or move them across unsuitable habitat, roads or project boundaries without written approval or direction from the relevant authority.

During habitat disturbance: Stop-work triggers, welfare and records

  • Stop work immediately if a Pictorella Mannikin is within the active plant exclusion zone, if an active nest or dependent young is found, or if birds repeatedly attempt to return to the work area.
  • Stop work and seek advice if clearing reveals an unexpected flock, a concentration at a water source, an irruption event or habitat use that was not covered by the approved plan.
  • Place an injured or distressed bird in a quiet, appropriately ventilated container and transfer it promptly to a veterinarian, licensed wildlife carer or wildlife authority, as directed by the fauna spotter catcher.
  • Record every sighting, nest, capture, injury, mortality, relocation, stop-work event and fauna management response, including coordinates, time, habitat, weather, photographs and personnel involved.
  • Notify the project environmental officer and the relevant authority of any death, injury, nest disturbance, permit breach or repeat stop-work event within the required reporting period.

After habitat disturbance: Post-clearance inspection and monitoring

Post-clearance checks should confirm that no birds, nests or dependent young remain in the disturbed area and that retained feeding, drinking and movement habitat remains functional.

  • Inspect the cleared footprint, retained buffers, access tracks, stockpiles and wetland edges at the end of each clearing day and again before the next work phase.
  • Check for injured or dead birds, abandoned nests, trapped birds, damaged grass hummocks and blocked movement routes.
  • Monitor retained grassland, waterholes, wetland fringes and drainage lines during construction and after rainfall, with extra visits if birds were recorded before clearing.
  • Compare post-work observations with the pre-clearance record, including flock size, feeding activity, drinking activity, nesting evidence, habitat condition and connectivity.

After habitat disturbance: Controls, reporting and offsets

  • Maintain exclusion fencing, no-go markers, sediment controls and machinery restrictions until the environmental officer confirms that the risk has ended.
  • Remove temporary controls only after the site is stable and their removal will not damage retained grassland, nests, wetland edges or access to water.
  • Provide the consent authority with the required clearing, fauna, incident and rehabilitation reports, including maps and verified database records.
  • Assess whether state approval conditions require rehabilitation, compensatory habitat or an offset. The supplied documents do not identify a national offset requirement for this species because it is stated to be not listed under the EPBC Act.
  • Keep all survey, handling, mortality, monitoring and corrective-action records for the period required by the approval and fauna management plan.

Rehabilitation actions: Restore feeding, nesting and movement habitat

Rehabilitation should restore the resources that make a site usable to a mobile grass-seed-eating finch: native grasses, open savannah structure, low cover, safe access to water and connected feeding and nesting areas.

Primary food: Seeds of native grasses collected mainly from the ground

Nest setting: Long grass or low bushes, with dome-shaped nests

Preferred habitat features: Open savannah, dry grassland, open grassy woodland and wetland fringes

  • Re-establish locally native seeding grasses across disturbed areas, using local provenance where required by the approval or rehabilitation plan.
  • Restore a mix of open grassland, scattered low shrubs and open woodland rather than creating dense vegetation across the whole site.
  • Reinstate grass hummocks and long grass in suitable areas for nesting, while retaining open ground for feeding.
  • Reconnect rehabilitated areas with retained grassland, wetland margins, drainage lines and other nearby habitat used by finches.
  • Do not use introduced grasses or vegetation that reduces native grass seed availability unless specifically approved.

Rehabilitation actions: Water, fire, weeds and predators

  • Design drainage and wetland rehabilitation to retain natural wet and dry periods, shallow margins and safe access to water without creating steep-sided pits or traps.
  • Protect rehabilitated grass from weed invasion, grazing pressure and excessive vehicle traffic until native cover and seed production are established.
  • Use fire management that maintains a varied mosaic of grass age and structure, avoids broad uniform burns and protects active nests and young.
  • Recognise that Pictorella Mannikins often forage on recently burnt ground, but do not use fire solely to attract birds or burn during unsuitable weather, nesting activity or approval-restricted periods.
  • Control pest predators and pest animals where required by the approved management plan, using methods authorised for the site and state or territory.

Rehabilitation actions: Monitoring and success measures

  • Monitor rehabilitation after wet-season growth and during the following dry season, using fixed photographs, vegetation plots and repeat bird searches at the same locations.
  • Measure native grass cover, seed production, weed cover, condition of wetland margins, connectivity to retained habitat and the availability of safe drinking sites.
  • Record Pictorella Mannikin presence, flock size, feeding, drinking, nesting and use of rehabilitated areas, while recognising that absence may reflect nomadic movement rather than rehabilitation failure.
  • Set completion criteria in the rehabilitation plan for native grass establishment, weed control, erosion stability, functioning drainage and protection of retained habitat.
  • Continue corrective actions until the site provides stable native grass cover and connected open habitat, or until the approving authority accepts an alternative outcome.

Sources