Brown-headed Honeyeater (Melithreptus brevirostris)

Conservation status

Commonwealth, EPBC Act 1999: Endangered.

Breeding season

Timing varies across the species' broad range. The table combines the documented general breeding period with regional and Kangaroo Island information. Local conditions, food availability and fire history can alter detection and movement patterns.

The months shown are a planning guide, not a substitute for a pre-clearance inspection. Active nests and roosts should be checked immediately before works, including outside the peak months.

• Breeding: Breeding is reported from June to April across the broader range. The Kangaroo Island subspecies is thought to breed from August to April, while the Adelaide and Mount Lofty Ranges account gives July to December.
• Egg laying and incubation: Kangaroo Island birds usually lay in September and October. Incubation is approximately 14 days, with both sexes and sometimes helpers involved.
• Nestlings and dependent young: Young remain in the nest for approximately 15 days. Adults, helpers and the wider roosting group may feed or assist with incubation, but the documents do not define the full period of post-fledging dependence.
• Local movement: The species is generally resident within its regional range but makes local movements within large home ranges as food availability changes. Kangaroo Island birds are locally nomadic, although they remain on the island year-round.
• Highest clearing risk: Clearing can remove nests, dependent young, feeding trees and communal roosts. Risk is highest during the documented breeding and nesting period, especially September to December when laying, incubation and nestling care overlap, but suitable habitat can be occupied at any time of year.

Identification

The Brown-headed Honeyeater is a small, plain olive and buff honeyeater that is usually active high in trees. Identification is easiest from the combination of a brown head, pale nape band, creamy eye-ring and short, slender bill.

Adults are dull olive-green above, with a brighter rump and upper-tail coverts. The underparts are pale grey, buff-white or buff with a pale yellow to rufous wash. The head is brown, with a pale buff crescent across the nape, and the eye is surrounded by a creamy yellow to orange eye-ring. The chin and throat are off-white, the bill is black, and the legs and feet are brown.

Length: 13 to 15 cm for the species; approximately 13 cm for the Kangaroo Island subspecies.

Wing length: 7.3 to 7.5 cm for the Kangaroo Island subspecies.

Tail length: Approximately 6 cm for the Kangaroo Island subspecies.

Bill length: Approximately 1.7 cm for the Kangaroo Island subspecies.

Identification: Sexes and similar species

The sexes are similar in appearance. On Kangaroo Island, females are slightly smaller than males, and there is no seasonal change in adult plumage. The species can resemble other Melithreptus honeyeaters, especially the White-naped Honeyeater, but lacks that species' black cap and red eye-wattle. The Brown-headed Honeyeater has a brown head, a pale nape line and a creamy eye-ring.

• Juveniles have a less obvious nape crescent, light olive edges to the secondary feathers and a bill that is often light orange-yellow with a dark brown tip.
• On Kangaroo Island, the cap is darker grey-brown and the nape band is less prominent than in the mainland nominate form.

Identification: Field signs and behaviour

The usual call is a sharp, scratchy 'chwik-chwik-chwik', often given in flight. Birds are commonly seen in groups of about five to fifteen, moving acrobatically through the upper canopy. Their constant movement and canopy use can make brief views more likely than prolonged ground-level observations.

• Look for small, active groups gleaning bark, branches, leaves and flowers high in eucalypts.
• Nests are small, deep cups made from fine bark or stringybark, grass, hair, fur, wool and spider web. They are suspended by the rim in dense outer foliage, usually 1 to 6 m above ground.
• A roost may contain several birds sitting side by side in the eucalypt canopy, facing outwards. Adults occupy the outer positions and juveniles are sheltered within the group.

Distribution: National range

The species has a broad but discontinuous distribution across southern and eastern Australia, and a separate distribution in south-western Australia. The nationally Endangered listing information supplied here applies specifically to the Kangaroo Island subspecies, not to every mainland subspecies.

The nominate mainland subspecies occurs from the New South Wales and Queensland border south-west through the Great Dividing Range and coastal south-east Australia to the Bassian Plains of Victoria and South Australia, and into the eastern margins of the Murray-Darling Basin. Other subspecies occur in the central and eastern Murray-Darling Basin, on the Eyre Peninsula and in south-western Australia, including areas south of Point Culver through Menzies, Mount Singleton, Coburn and the Peron Peninsula.

• Relevant states and territories are Queensland, New South Wales, Victoria, South Australia and Western Australia.
• Named broad bioregional settings include the Great Dividing Range, coastal south-east Australia, the Murray-Darling Basin, the Eyre Peninsula and the south-western Australian sandplain and coastal region.
• The species occurs from coastal areas to subalpine environments, but is absent from the most arid areas.

Distribution: Kangaroo Island stronghold

Melithreptus brevirostris magnirostris is endemic to Kangaroo Island. Its distribution there is difficult to define because birds are locally nomadic and move through eucalypt bushland in response to food availability. Recent records have been concentrated in Flinders Chase National Park, Dudley Conservation Park, Vivonne Bay Conservation Park, Lathami Conservation Park and Parndana Conservation Park.

Kangaroo Island extent of occurrence: Estimated at 5,300 km² and considered stable.

Kangaroo Island area of occupancy: Estimated at 1,420 km² after contraction.

Recent transect detection: Recorded on 16% of transect surveys in unburnt patches and 6% of surveys in burnt areas between May 2020 and April 2021.

• The subspecies can also occur in urban and suburban vegetation, golf courses and gardens where suitable trees remain.
• Post-fire surveys recorded birds in unburnt fragments and at a lower frequency in burnt areas, indicating the importance of retaining unburnt vegetation during recovery.

Distribution: Population status

A whole-species population estimate was not provided in the supplied documents. The Kangaroo Island subspecies was estimated to have about 51,000 mature individuals in the wild, with a declining trend. More than half of the subspecies' population was suspected to have been lost in the 2019 to 2020 Kangaroo Island fires.

EPBC status: Endangered for the Kangaroo Island subspecies, effective from 14 December 2021.

Kangaroo Island mature individuals: Approximately 51,000 in the wild.

Generation length: 2.8 years for the Kangaroo Island subspecies.

Habitat: Vegetation types

Brown-headed Honeyeaters use open, mature vegetation with flowering and insect-bearing trees, particularly eucalypts. They can persist in modified areas when connected trees and other suitable vegetation are retained.

The species occurs mainly in open eucalypt forests and woodlands, including temperate forest, mallee and stringybark scrub. It also uses heathy woodland, grassy woodland and mallee in the Adelaide and Mount Lofty Ranges, and may occur in parks, gardens, golf courses and suburban vegetation.

• Prioritise assessment of mature eucalypt-dominated vegetation, including isolated trees and narrow vegetated corridors.
• On Kangaroo Island, suitable habitat includes areas dominated by eucalypts, Banksia marginata open scrub and Eucalyptus cneorifolia open scrub.
• Retain associated paperbarks, acacias and native pines where they provide nest sites.

Habitat: Structure and environmental setting

Mature eucalypts are important for feeding, and the species uses the canopy, mid-storey and understorey. Nests are placed in dense outer foliage of trees or tall shrubs. The species is recorded from the coast to subalpine areas and from temperate habitats to areas bordering the arid zone, but it generally avoids the most arid environments.

• Assess canopy continuity as well as individual trees, because birds move between feeding trees and use large home ranges.
• Retain unburnt vegetation and suitable regrowth near burnt areas, particularly where it provides refuge or a route for recolonisation.
• Treat currently unoccupied burnt habitat as potentially important if it is expected to become suitable again.

Foraging habitat: Diet and food resources

Brown-headed Honeyeaters forage mainly in the canopy, often in small groups. They glean insects and carbohydrate foods from bark, foliage, branches and flowers, so clearing mature feeding trees can remove several food sources at once.

The species feeds mainly on insects and also takes nectar. It may glean insects from leaves, branches and bark, and probe under bark for lerp, manna and honeydew. On Kangaroo Island, the diet is estimated at approximately 65% insects and 35% nectar.

• Inspect flowering eucalypts, banksias and acacias for foraging activity.
• Retain mature eucalypts that provide rough bark, foliage and flowers, including trees that are not currently flowering.
• Consider seasonal changes in nectar and insect availability when interpreting absence during a site inspection.

Foraging habitat: Foraging pattern and range

Foraging is mainly arboreal in the canopy of woodland, forest and shrubland, with occasional use of the mid-storey and understorey. Birds usually forage in groups of about six to twelve, although groups of five to fifteen are also reported. They make local movements within large home ranges as food availability changes.

Main foraging height: Tree canopy, with occasional mid-storey and understorey use.

Typical foraging group: About six to twelve birds; groups of five to fifteen are also reported.

Home range in the Adelaide and Mount Lofty Ranges: Approximately 12 ha in the breeding season and 48 ha in the non-breeding season.

• Survey the upper canopy as well as lower vegetation, using call detections and repeated observations where visibility is limited.
• Do not assume that a cleared gap is irrelevant because birds can cross it. The species may use isolated trees and narrow corridors as stepping stones, but clearing still reduces feeding area and connectivity.
• In the Adelaide and Mount Lofty Ranges, reported home ranges are approximately 12 ha during the breeding season and 48 ha outside the breeding season.

Breeding habitat: Breeding biology

Breeding occurs in trees and tall shrubs with dense outer foliage. The species can breed cooperatively, so a nest near a work area may be attended by more than the apparent breeding pair.

Both sexes incubate, and helpers may also incubate and feed young. A breeding group may include the pair, additional adults and a juvenile. The nest is a small deep cup suspended by its rim in thick outer foliage, commonly in eucalypts but also in paperbarks, acacias, native pines and Monterey Pines.

Breeding season, broader range: June to April.

Breeding season, Kangaroo Island: August to April; eggs are usually laid in September and October.

Breeding season, Adelaide and Mount Lofty Ranges: July to December.

Clutch size: Usually two or three eggs, occasionally two on Kangaroo Island.

Incubation: Approximately 14 days in the regional account; both sexes and sometimes helpers incubate.

Time in nest: Approximately 15 days.

Age at maturity: Not stated in the supplied documents.

Lifespan: Not stated in the supplied documents.

• Search dense outer foliage from ground level to 6 m, especially in eucalypts and tall shrubs.
• Where a nest is found, check nearby trees and shrubs for additional group members and likely feeding routes.
• Avoid assuming that a single adult near a nest is the only bird requiring protection.

Breeding habitat: Breeding habitat features

Nests are usually placed in the drooping outer foliage of eucalypts or tall shrubs. Nest material includes fine bark or stringybark, grass, hair, fur, wool and spider web. The surrounding habitat must also provide canopy feeding areas for adults and helpers.

• Retain trees and tall shrubs with dense outer foliage, including those outside the immediate construction footprint if they are connected to the nest area.
• Check live and recently used nest material sources, including stock, domestic animals and other birds' nests, where these occur near the site.
• Maintain nearby mature eucalypts and flowering shrubs during the breeding period to support adults and helpers.

Sheltering habitat: Night roosts

The species has no documented dependence on hollows, burrows or dens. Its main documented shelter and night refuge is communal roosting in the canopy of eucalypts.

Roosting occurs at night in eucalypt canopies, usually in groups. Birds sit side by side, touching and facing outwards in different directions. Adults occupy the outside of the group and juveniles are positioned within it.

• Retain mature eucalypts and connected canopy near known records, particularly trees that could support a stable communal roost.
• Inspect trees near dusk and shortly after first light when birds approach or leave roosts in small groups.
• Avoid night works, bright lighting and repeated disturbance near known roost trees where practicable.

Sheltering habitat: Refuge and movement cover

Unburnt vegetation within or beside recently burnt areas can provide refuge after fire. The species also uses isolated trees and narrow corridors as stepping stones between larger areas of vegetation. Stable roosting sites have been reported in the Adelaide and Mount Lofty Ranges.

• Protect unburnt patches from additional clearing, back burning and other disturbance until surrounding burnt habitat has recovered sufficiently.
• Retain roadside trees, mature paddock trees and narrow vegetated links where they connect known or suitable habitat.
• No specific dimensions for roost trees, hollows, burrows or ground cover were provided in the supplied documents.

Threats: Fire and climate

The strongest documented threat is extensive, high-severity wildfire, especially for the Kangaroo Island subspecies. On development sites, direct habitat removal, loss of mature trees, fragmentation and disturbance to breeding or roosting birds are the main practical risks.

Frequent, large-area, high-intensity wildfire can kill birds, remove mature feeding and roosting trees and fragment remaining habitat. The 2019 to 2020 Kangaroo Island fires burnt about 67% of the subspecies' modelled range, including 51% at high to very high severity and a further 11% at low to moderate severity. Increasing heatwaves, drought and extreme fire weather are expected to increase fire risk.

• Retain unburnt vegetation within and adjacent to burnt areas.
• Do not place planned burns, asset protection clearing or back burning through known occupied or suitable habitat without considering the species' recovery needs.
• Include the effects of fire, fire severity and time since fire in impact assessments.

Threats: Clearing and fragmentation

Historical clearing for agriculture has reduced habitat, and further removal of roadside vegetation, mature trees or connected woodland can reduce feeding area, nest sites and movement routes. The species can cross cleared land and use isolated trees, but it also relies on large home ranges and connected feeding resources.

• Map mature eucalypts, flowering shrubs, narrow corridors, isolated paddock trees and known roost or nest trees before finalising the footprint.
• Avoid clearing suitable habitat that is currently unoccupied because of recent fire, as it may be needed for recovery and recolonisation.
• Stage works to retain canopy links and avoid removing multiple feeding or roost trees from the same local home range.

Threats: Weeds, disease and pest animals

Invasive weeds can alter vegetation structure, food availability, fire behaviour and habitat quality. Phytophthora cinnamomi can cause native plant dieback and reduce habitat suitability. Feral pigs degrade habitat by grazing, trampling and digging, and can spread weeds and Phytophthora. Feral cats are a potential predator, with risk possibly increasing after fire when open ground makes hunting easier.

• Use clean-down and hygiene procedures for plant, vehicles, footwear and soil movement where Phytophthora is a risk.
• Prevent weed spread from vehicles, machinery, stockpiles and disturbed soil, especially for fire-adapted weeds.
• Control or exclude feral pigs and cats from work areas where site-specific assessment identifies a risk.
• Do not assume canopy use removes all predation risk, particularly in recently burnt or heavily disturbed habitat.

Threats: Other project risks

Noise, lighting, vegetation removal and repeated access can disturb breeding groups and communal roosts. The supplied documents do not identify a species-specific road mortality rate, hydrology threshold or collision distance. These risks should therefore be assessed from the proposed works, vegetation structure and local bird records rather than assigned a numerical buffer without site evidence.

• Schedule vegetation removal outside the main breeding and dependent-young period where practicable, and recheck for active nests immediately before works.
• Use spotter catcher and ecologist observations to identify canopy activity, nests and roosting groups before tree removal or night works.
• Maintain drainage and runoff controls so construction does not cause avoidable degradation of adjacent woodland, scrub or mallee habitat.

Survey methodology: 1. Daylight searches and transects

Survey effort should focus on daylight detection in eucalypt woodland, forest, mallee and stringybark scrub. The available documents do not provide a national survey guideline or a prescribed minimum effort for this species, so the project ecologist should set effort using the size and condition of the disturbance area, the amount of suitable habitat and the likelihood of local movement.

Search suitable habitat during daylight, when Brown-headed Honeyeaters forage in the canopy, mid-storey and understorey.

Use walked transects through all vegetation proposed for clearing and through nearby retained habitat that may be used for relocation or post-clearance monitoring.

Record every detection, including the number of birds, flock size, behaviour, height above ground, call, vegetation type and whether the birds are using the area for feeding, roosting or nesting.

Give particular attention to mature eucalypts, Banksia marginata, Eucalyptus cneorifolia open scrub, stringybark scrub and other eucalypt-dominated vegetation.

Typical size: 13 to 15 cm for the species; the Kangaroo Island subspecies is approximately 13 cm long and weighs around 14 g.

Typical group size: The species is usually seen in flocks of 5 to 15 birds, and commonly forages in groups of 6 to 12 birds.

Relevant survey timing: The Kangaroo Island subspecies is thought to breed from August to April, while the Australian Museum gives a broader breeding period of June to April.

• Repeat transects where practical because the birds are locally nomadic and move within large home ranges in response to food availability.
• Survey unburnt habitat and recently burnt habitat separately, because post-fire surveys on Kangaroo Island recorded Brown-headed Honeyeaters at 16% of transect surveys in unburnt patches and 6% in burnt areas.

Survey methodology: 2. Detection and identification

Use visual and call-based detection during walked searches. The species is a small, plain olive-green honeyeater with a brown head, a pale line across the back of the head and a creamy yellow to orange eye-ring.

Listen for the sharp, scratchy ‘chwik-chwik-chwik’ call, including birds calling in flight.

Search the upper canopy first, then inspect lower shrubs and the bark, branches, leaves and flowers of eucalypts and other suitable plants.

Check detected birds against similar Melithreptus species and retain photographs or audio where identification is uncertain.

• Record the direction of movement and the nearest retained vegetation when birds move out of the disturbance area.
• Do not treat an absence during one visit as evidence that the habitat is unused, because the birds move locally and the distribution of the Kangaroo Island subspecies is not well known.

Survey methodology: 3. Habitat and nest searches

Map all suitable habitat within and adjacent to the proposed disturbance area before works begin.

Inspect the outer foliage of eucalypts and tall shrubs for small, deep cup nests suspended by the rim in thick foliage, generally 1 to 6 m above ground.

Inspect paperbarks, acacias, native pines and Monterey Pines as well as eucalypts, because these plants have been recorded as nest sites for the Kangaroo Island subspecies.

Record mature trees, dense foliage, stable roosting vegetation, connected tree cover and any areas containing flowering or bark-foraging resources.

Nest height reported for the species: Approximately 1 to 6 m above ground.

Typical clutch: Two to three eggs.

• Schedule nest searches during the breeding period where practicable, noting that the source material gives breeding periods from June or July to April.
• Avoid climbing trees or disturbing nests during searches unless the person is authorised and the method is covered by the relevant animal ethics, wildlife and project approvals.
• Use a qualified arborist or other authorised person where a tree inspection from the ground cannot resolve whether a nest or other fauna feature is present.

Survey methodology: Minimum effort and reporting

Known survey example on Kangaroo Island: 104 transects were established on western Kangaroo Island and repeat surveyed up to 6 times at approximately 6 to 8 week intervals, producing 238 transect surveys in unburnt patches and 336 in burnt areas.

• Set and justify the number of visits, transect length, search area and repeat interval in the project survey plan because the supplied documents do not prescribe a national minimum survey effort.
• Use repeat visits where habitat is suitable, birds are mobile, fire has recently affected the site, or the first visit occurs outside the breeding period.
• Document survey dates, start and finish times, weather, wind, rainfall, temperature, observer names, survey area, method, effort, vegetation condition, fire history and all detections or non-detections.
• Map records using coordinates and provide photographs or audio where available.
• Submit records to the relevant state or territory wildlife database and to the Atlas of Living Australia or another accepted national repository where required by the project or approval.
• Report any record that may represent the listed Kangaroo Island subspecies separately from mainland records, and confirm the taxon before relying on the EPBC listing.

Before habitat disturbance: Avoid and minimise

The first preference is to avoid clearing occupied or suitable habitat. This is particularly important where the project affects mature eucalypts, connected woodland, mallee or stringybark scrub, because the birds forage, roost and nest in these habitats and may require large home ranges.

• Retain all known occupied areas and suitable habitat where practicable, including mature eucalypts, eucalypt-dominated woodland, mallee, stringybark scrub, Banksia marginata and Eucalyptus cneorifolia open scrub.
• Retain trees and tall shrubs with dense outer foliage that may support nests or roosting groups.
• Maintain connected vegetation and stepping-stone trees between retained patches, because the species uses large home ranges and can move through narrow corridors and isolated trees.
• Avoid clearing unburnt vegetation within or adjacent to recently burnt areas where it may provide refuge until burnt habitat has recovered sufficiently.
• Set project-specific no-go areas and buffers around occupied habitat, nests, roosts and retained vegetation, based on advice from the project ecologist and the relevant approval authority.
• Avoid actions that introduce disease, weeds or predators to retained habitat.

Before habitat disturbance: Approvals and work planning

• Confirm the taxon affected by the project, because the supplied EPBC advice concerns Melithreptus brevirostris magnirostris, the Kangaroo Island Brown-headed Honeyeater, rather than every population of the species.
• If the project may significantly affect the EPBC-listed taxon or its habitat, obtain an EPBC Act referral and any approval required before clearing or construction.
• Check state and territory wildlife legislation, threatened species controls, scientific permits and fauna handling requirements before commencing work.
• Prepare a fauna management plan that identifies survey effort, habitat to retain, exclusion areas, fauna handling roles, stop-work triggers, relocation sites, injury response and reporting requirements.
• Stage clearing so that retained habitat remains connected and fauna can move towards suitable retained vegetation without being driven into active work areas.
• Schedule vegetation removal outside the main breeding period where practicable, noting that breeding has been reported from June or July to April.

Before habitat disturbance: Site preparation

• Complete a pre-clearance survey close enough to the start of works to identify current birds, nests, roosts and changes in habitat condition.
• Mark no-go areas, retained trees, nest trees, roosting vegetation, access routes and fauna relocation areas on plans and on the ground.
• Use exclusion fencing where it can prevent machinery and personnel from entering retained habitat without creating a barrier to safe fauna movement.
• Brief machinery operators and the fauna spotter catcher on the species’ appearance, call, canopy use, likely nest locations and the project stop-work procedure.
• Inspect machinery, footwear and earthmoving equipment for soil and plant material before entering retained habitat, and apply the project biosecurity controls for Phytophthora cinnamomi and weeds.

During habitat disturbance: Daily controls and spotter catcher duties

Brown-headed Honeyeaters forage and roost mainly in the canopy, so machinery controls must cover trees and overhead vegetation as well as ground-level habitat. The fauna spotter catcher should have authority to stop work whenever an animal, nest or unexpected habitat feature is found.

• Complete a daily pre-start inspection of the work area, access routes, retained vegetation, marked exclusion zones and any known nest or roost locations.
• Keep the fauna spotter catcher in a position where they can see the active clearing face, machinery and nearby canopy, and maintain direct communication with operators.
• Clear in stages towards retained habitat only where the ecologist considers that this provides a safe movement route and does not drive birds into machinery or unsuitable habitat.
• Use low-speed plant movements near retained trees and stop machinery before branches, nests or birds are within the machinery exclusion distance specified in the fauna management plan.
• Prevent workers from entering retained habitat, roost sites and nest areas unless the entry is authorised and controlled.

During habitat disturbance: Habitat features and unexpected finds

• Stop work and obtain an ecological assessment if a nest is found in vegetation proposed for removal.
• Do not fell or disturb a nest tree while eggs, nestlings or dependent young may be present unless the relevant authority has approved the action and the authorised fauna professional directs it.
• Retain logs, fallen timber, dense shrubs and other ground features where they form part of connected refuge habitat, even though the species mainly uses the canopy.
• Do not remove adjacent unburnt vegetation or refuge patches to make access easier after fire, because these patches may support surviving birds.
• Treat weeds, feral pigs and Phytophthora cinnamomi as habitat management issues and prevent their spread through the work area.

During habitat disturbance: Animal found, injury and stop-work response

• Stop the relevant activity when a Brown-headed Honeyeater enters the work area, is trapped, is injured, or is found in a tree or shrub scheduled for removal.
• Allow an uninjured bird to leave naturally where it can move safely to nearby retained habitat, and keep machinery stopped until the spotter catcher confirms that it has cleared the danger area.
• Do not capture, handle or relocate the bird unless the person is authorised under the applicable wildlife permit and the approved fauna management plan.
• If relocation is authorised, use nearby retained habitat with suitable eucalypts or other documented feeding, roosting and nesting resources, and record the release location and time.
• Place an injured bird in a dark, secure, ventilated container with minimal handling and transfer it promptly to an appropriately qualified wildlife carer or veterinarian under the project protocol.
• Stop work and contact the project ecologist and approval authority if a nest, dependent young, repeated bird activity, mortality, or habitat feature not covered by the plan is found.

During habitat disturbance: Records

• Record each daily inspection, bird sighting, nest, injury, capture, release, mortality, stop-work event and restart authorisation.
• For each event, record the date, time, coordinates, habitat, bird number, observed behaviour, action taken, handler, permit details where relevant and photographs if safe to obtain.
• Report deaths, injuries, nest disturbance and unexpected occupied habitat to the project manager and the relevant regulator in accordance with the approval conditions.

After habitat disturbance: Post-clearance checks

Post-clearance work should confirm that no fauna remains in the disturbance footprint, that retained habitat has not been damaged and that the project has met its approval conditions. Monitoring should distinguish fire-affected habitat from unburnt habitat where fire is a major project risk.

• Inspect the cleared area, retained trees, adjacent canopy and access tracks immediately after each clearing stage for birds, nests, injured fauna, mortality and accidental damage to exclusion areas.
• Complete a final fauna inspection before demobilising machinery from each work area.
• Confirm that all retained habitat, connected vegetation, marked nest trees and refuge patches remain intact and accessible.
• Remove temporary fencing only after the project ecologist confirms that construction no longer threatens retained habitat or fauna.

After habitat disturbance: Monitoring and corrective action

Monitoring parameters identified in the conservation advice: Population size, breeding success, number of mature individuals, management effectiveness, extreme climatic effects and remaining suitable habitat.

• Monitor retained habitat and nearby suitable habitat using repeat daylight transects or equivalent searches, with effort and timing stated in the fauna management plan.
• Record population observations, breeding activity, habitat condition, weed spread, Phytophthora symptoms, feral pig damage and cat activity where these are relevant to the project.
• Use the pre-clearance results as the baseline and report changes in detection rate, habitat area and habitat condition rather than relying only on presence or absence.
• Investigate declining detections, new mortality, loss of canopy, weed invasion or damage to retained vegetation, and implement corrective action approved by the project ecologist.

After habitat disturbance: Reporting and offsets

• Provide the regulator and approval holder with the survey, clearing, fauna handling, incident, monitoring and rehabilitation records required by the approval.
• Update the project species register and submit verified records to the relevant state or territory wildlife database.
• Where approved impacts cannot be avoided or mitigated, implement the offset or other compensatory measure required under the EPBC Act, state approval or project condition.
• Do not use an offset as a substitute for retaining occupied habitat or habitat critical to survival where avoidance is practicable.

Rehabilitation actions: Restore structure and food resources

Rehabilitation should restore the feeding, roosting, breeding and movement resources used by this honeyeater. The conservation advice identifies all known occupied areas and suitable habitat within the known range as potentially habitat critical to survival, including areas that may become suitable again after fire.

Diet reported for the Kangaroo Island subspecies: Approximately 65% insects and 35% nectar.

Foraging location: Mainly in the canopy of woodland, forest and shrubland, with occasional use of the mid-storey and understorey.

• Re-establish locally appropriate eucalypt woodland, forest, mallee or stringybark scrub that matches the pre-disturbance vegetation community.
• Include suitable native shrubs and retain or replant Banksia marginata and Eucalyptus cneorifolia open scrub where they formed part of the original habitat.
• Use plantings that will develop mature canopy, outer foliage and bark-foraging surfaces, because the species obtains about 65% of its diet from insects and about 35% from nectar.
• Retain existing mature trees and protect regenerating eucalypts rather than relying only on new plantings.
• Reconnect retained patches with native vegetation and retain stepping-stone trees where practicable.

Rehabilitation actions: Provide nesting and roosting resources

Nest materials reported: Strips of stringybark or grass woven with hair, fur, wool and spider web.

Roosting behaviour: Groups roost side by side in eucalypt canopy, with adults on the outside and juveniles protected within the group.

• Retain tall shrubs and trees with dense outer foliage for cup nests and communal roosting.
• Retain or reinstate paperbarks, acacias, native pines and other suitable nesting plants where they occurred before disturbance.
• Consider nest boxes only where a suitably qualified ecologist identifies a specific need and an appropriate design, because the supplied documents identify natural foliage nests rather than a nest-box requirement.
• Do not remove fallen timber or dense vegetation from rehabilitation areas unless it presents a safety or biosecurity risk.

Rehabilitation actions: Fire, weeds, pests and disease

• Prepare fire management actions that protect rehabilitating and unburnt refuge vegetation from high-severity fire, planned burning, back burning and unnecessary clearing.
• Coordinate fire planning with the project ecologist and land manager so that fuel reduction does not remove recovering habitat or reduce connectivity.
• Control invasive weeds, including fire-adapted weeds and Tasmanian Blue Gum seedlings where they threaten native vegetation structure or increase fire risk.
• Prevent the introduction and spread of Phytophthora cinnamomi through vehicle, machinery, soil and footwear hygiene controls.
• Control feral pigs and assess cat activity where rehabilitation is near burnt habitat or where monitoring indicates predation risk.

Rehabilitation actions: Success measures and monitoring

• Monitor rehabilitation until the project ecologist confirms that vegetation structure, habitat connectivity and threat controls meet the approved completion criteria.
• Measure survival and growth of planted eucalypts and shrubs, retained canopy condition, weed cover, disease symptoms, pig damage, cat activity and Brown-headed Honeyeater detections.
• Repeat daylight bird searches during the breeding period and at other times specified in the monitoring plan, recording flock size, feeding, nesting and roosting observations.
• Compare results with the pre-clearance baseline and investigate failure to achieve habitat establishment or continued absence where suitable habitat should be available.
• Share verified fauna records with the relevant state or territory wildlife database and include rehabilitation outcomes in the project close-out report.

Sources

• Conservation Advice for Melithreptus brevirostris magnirostris (Kangaroo Island Brown-headed Honeyeater), Australian Government DCCEEW: http://www.environment.gov.au/biodiversity/threatened/species/pubs/80453-conservation-advice-14122021.pdf
• EC 102 - Conservation advice - Appendices, Australian Government DCCEEW: http://www.environment.gov.au/biodiversity/threatened/communities/pubs/102-conservation-advice-appendices.pdf
• Brown-headed Honeyeater, Australian Museum: https://australian.museum/learn/animals/birds/brown-headed-honeyeater/
• Brown-headed Honeyeater, South Australian Government: https://cdn.environment.sa.gov.au/landscape/docs/hf/pa-fact-brownheadedhoneyeater.pdf