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Olive-backed Oriole (Oriolus sagittatus)

The Olive-backed Oriole is a medium-sized woodland bird found across northern and eastern Australia, with records extending from the Kimberley to South Australia. It uses mature, leafy trees and fruiting vegetation, so clearing, pruning and construction near suitable trees can remove feeding or nesting habitat. It is not listed as endangered, vulnerable or near threatened nationally, but is treated as an EVNT-profiled species in this project, with Rare equivalents in South Australia and Tasmania and Priority 4 in Western Australia.

Conservation status

South Australia, National Parks and Wildlife Act 1972: Rare. This listing covers only Oriolus sagittatus sagittatus.

Migration and breeding season

The Olive-backed Oriole is resident in northern Australia and a summer migrant in southern and south-eastern Australia. Exact breeding months are poorly documented, so the calendar uses a broad spring to summer pattern and should be adjusted for local observations.

Breeding mode: Breeds as pairs. The female builds the nest, while the male feeds the young after hatching.

Nest site: A cup-shaped nest is attached by its rim to a horizontal branch or fork, usually high in the outer foliage of a tree or tall shrub. Nests have been recorded around 10 m above the ground.

Clutch size: Not recorded.

Incubation: Not recorded.

Fledging: Not recorded.

Age at maturity: Not recorded.

Breeding frequency: Not recorded.

Timing may shift between years and regions, particularly between resident northern populations and summer migrants in southern Australia, so pre-clearing checks should use recent local records and direct observations.

  • Breeding activity in Australia: Breeding is expected mainly in spring and summer, but local timing can vary and should be confirmed in the field.
  • Eggs, nestlings and dependent young: Nests and dependent young may extend into late summer where laying occurs later or breeding is repeated.
  • Southern summer presence: Birds occur in southern Australia mainly during the warmer months, with timing varying between years and locations.
  • Resident presence in northern Australia: Northern populations are resident, so birds may be encountered in suitable habitat in every month.
  • Autumn and winter nomadic movements: Small groups may move nomadically from autumn through winter, following fruiting trees.
  • Highest clearing risk: The highest risk is during spring and summer, when nests, eggs and dependent young may be present, although resident northern birds remain at risk in all months.

Identification: Appearance

The Olive-backed Oriole is a medium-sized bird with olive-green upperparts, pale streaked underparts and a bright red eye. It is often detected by its clear, tuneful call before it is seen, especially in leafy canopy.

Adults are about 26 to 28 cm long. The head and back are olive green, with grey wings and tail. The underparts are cream with brown streaking, and the bill and eye are reddish.

Females are generally duller green, with a paler bill and streaking extending higher onto the chin. Young birds are browner and have greyish bills.

Size: 26 to 28 cm

Key features: Red eye, reddish bill, olive-green back, grey wings and tail, cream streaked underparts

Identification: Calls and similar species

The call is a clear, tuneful phrase often rendered as “orri-orri-orriole”. The species can mimic other birds and may throw its voice, making the calling bird difficult to locate.

The Australasian Figbird is the main field comparison where both species occur. The Olive-backed Oriole has a red eye and reddish bill, while Figbirds have darker eyes and a blackish bill, with bare skin around the eye. The Yellow Oriole is generally more yellow overall.

  • Check the eye and bill colour before identifying a bird seen briefly in a canopy.
  • Use repeated calls and movement through the foliage to locate the individual.

Identification: Field signs

Look for the bird moving through the upper foliage of mature trees, usually alone or in pairs. Small groups may occur where fruit is abundant, particularly in autumn and winter.

The nest is a distinctive cup made from bark and grass bound with spider web. It is attached by the rim to a horizontal branch or fork, usually high in the outer foliage.

  • Record clear photographs, call recordings and the direction of movement where possible.
  • Do not approach or disturb a suspected nest during clearing or tree works.
  • Droppings, whitewash, stains and odour are not reliable field signs for this species.

Distribution: Australian range

In Australia, the Olive-backed Oriole occurs mainly across northern and eastern regions, with a range extending from the Kimberley in Western Australia around the east coast to Adelaide in South Australia. Records and project mapping cover a number of states and territories, but local abundance varies considerably.

The mapped Australian states and territories are New South Wales, Northern Territory, Queensland, South Australia, Tasmania, Victoria and Western Australia. The species is most strongly associated with northern and eastern Australia, while South Australian records are uncommon.

The species is resident in the northern part of its range. It appears to move into more southern areas during summer.

  • Kimberley and other northern areas of Western Australia.
  • Northern Territory and Queensland.
  • Coastal and inland portions of New South Wales and Victoria.
  • South Australia, where it is treated as Rare.
  • Tasmania is included in project mapping, although occurrence should be checked against current local records before works.

Distribution: Seasonal movements

Movement is not uniform across the range. Birds in northern Australia are generally resident, while southern birds may move seasonally. Small groups can make nomadic movements in autumn and winter, following fruiting trees.

  • Avoid assuming that a site is unused outside a single survey period.
  • Repeat observations where works affect fruiting trees, mature woodland or known local records.
  • Record the date, weather, habitat condition and whether birds were seen, heard or feeding.

Distribution: Overseas range

The species also occurs in New Guinea. This overseas range does not alter the need to assess local habitat and current state or territory requirements at an Australian work site.

Distribution: Conservation and project status

The species is not nationally listed as endangered, vulnerable or near threatened. It is nevertheless included in this EVNT profile because equivalent state categories and project-level screening apply in some jurisdictions.

South Australia and Tasmania use Rare or equivalent near threatened treatment in the relevant context. Western Australia uses Priority 4, a non-statutory category for rare and near threatened species that require monitoring. Confirm the current state register and any approval conditions before clearing.

  • Apply the mitigation hierarchy, avoid habitat loss first, then minimise disturbance and manage residual impacts.
  • In Queensland, check whether local protection provisions for near threatened wildlife or breeding places apply to the project.
  • Scale survey effort to habitat quality, season, the extent of proposed clearing and the relevant state listing.

Habitat: Vegetation to inspect

The Olive-backed Oriole uses many types of wooded habitat, from open woodland and forest to rainforest edges and well-treed urban areas. On development sites, retain mature trees, leafy canopy and fruiting vegetation wherever practicable.

Search mature woodland, open forest, rainforest margins and well-treed urban landscapes. Parks, golf courses and gardens can also support the species when they contain suitable canopy and fruiting trees.

The species may occur in isolated trees where those trees connect otherwise fragmented woodland or provide seasonal food.

  • Mature native trees with dense or leafy crowns.
  • Fruiting trees, including trees producing abundant berries.
  • Woodland edges, riparian vegetation and connected tree lines.
  • Large trees retained within parks, rural properties, reserves and construction footprints.

Habitat: Site features

Give particular attention to trees that project above surrounding vegetation or form a continuous canopy. Horizontal branches and outer foliage may provide nest sites, while nearby fruiting trees can provide feeding habitat.

Ecological-community remnants and patches containing mature trees should be assessed before vegetation removal. A general minimum buffer of 50 m from the outer edge of a high-value ecological-community patch is recommended in the project context, with 100 m where practical for very high-value patches.

General ecological-community buffer: At least 50 m from the outer edge of a relevant patch, or 100 m where practical for very high-value patches

  • Map mature trees, fruiting trees, canopy connections and woodland remnants.
  • Include adjacent native vegetation that provides habitat diversity, connectivity or a buffer.
  • Inspect trees before pruning, clearing, access-track construction or use of heavy machinery.

Habitat: Survey approach

Use experienced observers and combine quiet listening with visual searches of the canopy. The species may be easier to detect by its call than by a brief view through foliage.

Survey effort should represent the range of habitat and disturbance conditions on the site. Record survey dates, person-hours, weather, surveyor expertise, search limitations and all locations where birds are detected.

  • Search during suitable daylight conditions when birds are active and calls can be heard clearly.
  • Repeat surveys where habitat is suitable but detection is low, especially during periods when fruit is present.
  • Map observations and link them to vegetation type, canopy structure and nearby proposed works.

Foraging habitat: Feeding areas

Olive-backed Orioles feed mainly in the canopy, taking insects and fruit. Fruiting trees can attract birds even in modified landscapes, so urban and agricultural trees should not be dismissed as low-value habitat.

Look for birds in the upper foliage of mature trees, particularly where trees carry fruit or support abundant insect prey. Suitable feeding areas include woodland, forest, rainforest margins, parks, golf courses and gardens with fruiting trees.

The species often forages alone or in pairs. It may associate with Figbirds around fruiting trees, but is generally less gregarious.

  • Inspect the upper canopy of mature trees before removal or pruning.
  • Check fruiting trees and berry-producing plantings during the proposed works period.
  • Assess canopy links between feeding trees and nearby woodland or riparian vegetation.

Foraging habitat: Development risks

Clearing or heavily pruning mature canopy can remove feeding sites and reduce movement routes. Noise and machinery can also displace birds temporarily, particularly where works occur beside a nest or concentrated food source.

  • Retain fruiting trees and large canopy trees where safe and practicable.
  • Stage works to keep alternative feeding trees available nearby.
  • Avoid unnecessary lighting, clearing and machinery access beneath retained canopy.
  • Control weeds and protect native vegetation that supports insects and seasonal fruit.

Foraging habitat: Field observations

Record the tree species or vegetation type being used, the height of the bird, whether it was feeding, and whether fruit or insect activity was visible. These details help distinguish occasional passage from regular use of the site.

  • Note solitary birds, pairs and groups separately.
  • Record feeding direction and movement between trees.
  • Photograph fruiting trees and canopy condition where they are relevant to impact assessment.

Breeding habitat: Nest structure and location

The female builds a small cup-shaped nest high in the outer foliage of a tree or tall shrub. Nests can be easy to miss from the ground, particularly when foliage is dense, so tree works need a careful pre-clearance inspection.

The nest is made from strips of bark and grass bound with spider web. It is attached by its rim to a horizontal branch or fork, usually around 10 m above the ground and near the outer edge of the foliage.

The male does not build the nest or incubate the eggs. After hatching, the male feeds the young.

Typical nest height: Around 10 m above ground

Nest materials: Bark and grass bound with spider web

Nest position: Rim attached to a horizontal branch or fork in outer foliage

  • Inspect high horizontal branches and forks in mature trees and tall shrubs.
  • Use binoculars or other approved inspection methods where the canopy cannot be checked safely from the ground.
  • Treat a suspected nest as active until it has been assessed by a suitably experienced ecologist or fauna spotter catcher.

Breeding habitat: Pre-clearance checks

Complete a targeted inspection before removing or pruning trees, especially mature trees with dense outer foliage, horizontal branches or nearby fruiting vegetation. Listen for repeated adult calls and watch for birds carrying nesting material or food.

Where a nest is found, stop work in the immediate area and obtain advice on the applicable approval, exclusion and monitoring requirements.

  • Mark the tree and establish a practical exclusion area around the nest and access route.
  • Keep machinery, stockpiles and personnel away from the nest tree where directed by the fauna spotter catcher.
  • Reinspect after delays, storms or changes in the proposed work footprint.

Breeding habitat: Timing and habitat retention

Breeding months are not sufficiently defined for site use as a blanket timing rule. Avoid works during periods when birds are nesting or feeding young wherever practicable, and use on-site observations to guide timing.

Retain mature trees, tall shrubs, connected canopy and nearby feeding trees. These features can support breeding even where the surrounding site is urban or fragmented.

  • Schedule clearing outside observed breeding activity where the project program allows.
  • Do not burn or clear adjacent habitat when birds are nesting or otherwise reproducing.
  • If a nest must be affected under an approved action, use a qualified fauna professional to determine the required controls.

Sheltering habitat: Shelter features

Specific roosting and shelter requirements are not well defined for this species. In practice, retain dense foliage, mature canopy and connected woodland because these features provide cover between feeding and breeding activities.

Look for dense leafy crowns, rainforest edges, woodland canopy and tall shrubs near fruiting trees. Birds may move through these areas singly or in pairs and can be difficult to see when they remain high in the canopy.

No dependence on hollows, caves, burrows or communal roosts has been identified for this species.

  • Retain dense canopy and tall shrubs around mature trees.
  • Protect canopy connections across roads, work zones and cleared gaps where practicable.
  • Keep retained vegetation free from unnecessary pruning and edge damage.

Sheltering habitat: Roost and disturbance controls

Because roost locations and roost sizes are not well documented, use habitat-based controls rather than relying on a known roost site. Limit night works, bright lighting and avoidable disturbance near retained woodland and fruiting trees.

Use a fauna spotter catcher during clearing where suitable canopy, nests or active birds are present. Stop work if an injured, trapped or unusually distressed bird is found and follow the project fauna handling procedure.

  • Inspect retained trees for nests and active birds before daily works.
  • Maintain buffers around ecological-community patches and high-quality vegetation.
  • Prevent workers and machinery from damaging roots, trunks and low branches of retained trees.

Threats: Clearing and fragmentation

The main work-site risks are loss of mature canopy, removal of fruiting trees and disturbance to nests or breeding habitat. The species is generally secure, but local impacts can matter where woodland is fragmented or the relevant state category requires monitoring.

Removing mature trees, woodland remnants and rainforest margins reduces feeding, shelter and nesting opportunities. Fragmentation can also break canopy links between fruiting trees and other habitat.

  • Avoid clearing high-quality patches and retain large mature trees.
  • Keep connected native vegetation between retained habitat areas.
  • Use the mitigation hierarchy, avoid impacts first, then minimise and manage residual impacts.

Threats: Tree works and breeding disturbance

Pruning, lopping and tree removal can destroy a high nest or remove the surrounding canopy. Noise, vibration and machinery movement near an active nest can cause adults to abandon or reduce visits to the site.

  • Complete pre-clearance fauna and nest inspections.
  • Do not remove a tree containing a suspected active nest without relevant approval and specialist advice.
  • Use spotters, staged clearing and exclusion areas where required.

Threats: Fire, weeds and grazing

Inappropriate fire regimes can reduce woodland structure and disrupt breeding or feeding cycles. Weeds, overgrazing, trampling and tree rubbing can degrade retained habitat and reduce natural regeneration.

  • Plan fire to protect mature trees, understorey and breeding habitat.
  • Avoid planned burns when birds are nesting or otherwise reproducing.
  • Control invasive plants and prevent livestock or feral herbivores from damaging retained vegetation.

Threats: Predators and site management

Feral cats, foxes and other introduced predators can affect birds and their young. Construction sites can add disturbance, vehicle strike risk, waste and artificial lighting if not managed.

  • Keep food waste and construction refuse secured.
  • Restrict vehicle movements through retained habitat and use fauna speed controls where required.
  • Limit night lighting spill into woodland and canopy.
  • Record threats and management outcomes during environmental inspections.

Threats: Listing and compliance

The Olive-backed Oriole is not nationally listed as threatened, but the project profile recognises state or equivalent categories in some jurisdictions. South Australia and Tasmania use Rare or equivalent near threatened treatment in the relevant context, and Western Australia uses Priority 4.

Confirm the current listing, permit conditions and breeding-place requirements for the project location before works begin. Apply stronger controls where the site supports nesting birds, high-quality habitat or a locally significant population.

  • Check state and territory registers and approval conditions.
  • Document survey effort, habitat quality, observations, avoidance measures and any residual impacts.
  • Escalate unexpected records or active nests to the project ecologist and relevant authority contact.

Survey methodology: 1. Desktop assessment

Olive-backed Orioles are canopy birds that can be missed in dense vegetation, particularly when calling from cover. Use repeated visual and auditory searches, with extra attention to fruiting trees, open woodland edges and tall trees that could hold nests.

Map mature trees, fruiting trees, woodland, rainforest margins, well-treed parks and connected vegetation before the survey.

Review seasonal records and local observations. The species is resident in northern Australia and a summer migrant in south-eastern areas, so consider repeat surveys across seasons where seasonal movement may affect the project area.

Identify nearby ecological communities, including listed communities, and check current state and territory conservation requirements. Apply the highest relevant approval and survey standard.

Survey methodology: 2. Field detection

Survey during the morning when birds are generally more active. Add an afternoon survey where site conditions, access or local records justify it.

Search tree canopies, outer foliage, woodland edges and fruiting trees. Listen for the clear, tuneful call as well as watching for movement.

Use quiet observation points and slowly scan the upper canopy with binoculars. Do not rely on ground searches alone.

Look for the red eye and reddish bill, olive green upperparts, pale streaked underparts and grey wings and tail. Distinguish the species from a Figbird by its red eye and bill and lack of bare eye skin.

Survey methodology: 3. Nest and breeding-place search

Inspect mature trees and tall shrubs for a cup-shaped nest attached by its rim to a horizontal branch or fork near the outer foliage.

Search the upper canopy carefully. Nests are usually high above the ground, with one documented description placing them at about 10 m.

Do not climb, cut branches or disturb foliage to inspect a suspected nest. Use binoculars, a scope or an experienced arborist where a closer inspection is necessary.

Treat repeated adult visits, alarm calls, food carrying, faecal sacs or dependent young as evidence of an active breeding place.

Survey methodology: 4. Survey records

Record the date, start and finish times, weather, wind, rain, temperature where available, surveyors, survey method and person effort.

Map every sighting, call, nest, suspected breeding place, fruiting tree and important vegetation link with coordinates.

Record the number of birds, behaviour, direction of movement, height above ground and whether the bird was alone, paired or in a group.

Record survey limitations, including poor visibility, noise, wind, inaccessible canopy and recent disturbance.

Before habitat disturbance: 1. Approvals and legal checks

Plan clearing around the retention of mature trees, canopy links and fruiting vegetation. The Olive-backed Oriole is not listed under the EPBC Act, but state and territory requirements still apply, including special checks for any active breeding place.

Confirm the current listing and permit requirements for the project location before works begin. The species is treated as Rare in South Australia and Tasmania under the classifications described for this project, and as secure in the other mapped jurisdictions.

Complete an EPBC Act self-assessment and referral check where the action could affect a listed ecological community or another protected matter. Do not assume that a species being unlisted removes all approval obligations.

In Queensland, check whether the animal is protected wildlife and whether interference with a breeding place requires a species management program or other approval. Obtain or confirm any Queensland species management program before disturbance.

Check state wildlife, vegetation clearing, planning and animal welfare requirements. Use only appropriately authorised fauna spotter catchers for capture, handling or relocation.

Before habitat disturbance: 2. Avoidance and buffers

Retain mature trees, large canopy trees, fruiting trees and connected woodland wherever practicable.

Retain trees with visible nests and trees that are repeatedly used for feeding or shelter. Avoid damage to the surrounding canopy and understorey.

Where a project affects a listed ecological community, use at least a 50 m buffer from the outer edge of the community patch where practicable. Consider 100 m for very high conservation value patches or where the approval requires it.

Set a site-specific exclusion zone around any active nest or breeding place in consultation with the project ecologist and relevant authority. Mark it clearly and keep machinery, workers and material storage outside it.

Before habitat disturbance: 3. Timing and pre-clearance survey

Schedule works outside periods of confirmed breeding activity where practicable. Breeding timing is not sufficiently defined for all regions, so use local records, pre-clearance observations and advice from the project ecologist rather than relying on a fixed calendar.

In south-eastern areas, consider seasonal movement because the species may arrive for summer and move more widely in autumn and winter. In northern areas, allow for resident birds to use the site throughout the year.

Complete a targeted pre-clearance survey shortly before works. Repeat the inspection if clearing is delayed, vegetation changes, a nest is found or birds show breeding behaviour.

Survey all trees and shrubs proposed for removal, including the upper canopy and horizontal outer branches.

Before habitat disturbance: 4. Site controls and induction

Mark retained vegetation, exclusion zones, access tracks and no-go areas before machinery arrives.

Induct all workers on the species' appearance, call, nest type, reporting procedure and the authority of the spotter catcher to stop work.

Keep stockpiles, lighting, vehicle parking and temporary buildings away from retained canopy and breeding places.

Use a suitably qualified ecologist or fauna spotter catcher to approve any change to the clearing footprint.

During habitat disturbance: 1. Sequential clearing

Clear in a controlled sequence and keep the spotter catcher close enough to inspect vegetation and stop machinery. Work must pause whenever a bird, nest or other fauna cannot be safely assessed.

Clear non habitat areas first, then work progressively towards retained vegetation and exclusion zones.

Use staged clearing that allows birds to move into safe retained habitat. Avoid isolating a single tree or small patch where a connected alternative is available.

fell or remove trees only after the spotter catcher has inspected the canopy, branches, trunk and ground zone.

Keep machinery movement slow near retained trees and stop if birds repeatedly approach the work area or show alarm behaviour.

During habitat disturbance: 2. Stop-work authority

Give the fauna spotter catcher authority to stop work immediately for a suspected nest, active breeding place, injured animal, trapped bird or unsafe fauna handling situation.

Keep workers and machinery outside the exclusion area while the spotter catcher assesses the situation.

Restart only when the spotter catcher and project ecologist confirm that the control measures are in place and any required approval has been obtained.

During habitat disturbance: 3. Active breeding place or roost

If an active nest or breeding place is found, stop work and prevent access to the tree and its surrounding exclusion zone.

Do not remove, relocate, touch or photograph the nest at close range unless this is authorised and necessary for compliance or animal welfare.

Contact the project ecologist and relevant authority to confirm the required buffer, timing and approval pathway. Resume only after the breeding place is no longer active or the approved management action is authorised.

If a group of birds is using a tree or site as a regular roost or feeding area, retain the habitat and obtain ecological advice before changing it.

During habitat disturbance: 4. Handling and injured animals

Allow healthy birds to leave on their own wherever possible. Do not chase birds through the canopy or handle them to clear the work area.

Only authorised and trained fauna personnel may capture or handle an Olive-backed Oriole. Use a suitable ventilated container, keep handling quiet and minimise holding time.

For an injured bird, stop nearby work, protect it from people and predators, and contact a licensed wildlife rehabilitator or veterinarian through the project fauna protocol.

Record the finder, location, time, condition, action taken, person who handled the bird and final outcome.

During habitat disturbance: 5. Daily records

Record clearing dates, weather, personnel, machinery, areas cleared and areas retained.

Record all sightings, calls, nests, breeding behaviour, injuries, captures, relocations, mortalities, stop-work events and approval directions.

Photograph and map relevant habitat and nest locations from a safe distance. Store records with the project environmental register.

After habitat disturbance: 1. Immediate checks

Post-clearance checks confirm that no fauna or breeding place has been overlooked and that retained habitat remains usable. Keep the response proportionate to the scale of clearing and any conservation listing or approval condition.

Inspect the cleared area, tree bases, retained vegetation, exclusion zones and access routes after each clearing stage.

Search for injured, trapped or displaced birds and check that no nest, egg or dependent young has been exposed.

Confirm that retained trees and canopy links have not been damaged by machinery, falling timber, vibration or material storage.

After habitat disturbance: 2. Follow-up monitoring

Undertake follow-up observations where a nest, breeding place, relocation or substantial habitat loss occurred.

Recheck retained fruiting trees and nearby canopy for feeding birds and signs of continued use.

Use repeat morning observations and call detection where the project ecologist considers that ongoing use, seasonal movement or disturbance effects need to be assessed.

After habitat disturbance: 3. Reporting and incidents

Submit records required by the approval, species management program, land manager or state authority.

Report injuries, deaths, unauthorised nest disturbance, clearing outside the approved footprint and breaches of exclusion zones through the project's incident system.

Update the site risk assessment and fauna management plan when new information changes the likelihood of breeding, roosting or repeated use.

After habitat disturbance: 4. Relocated animals

Confirm the condition and release or rehabilitation outcome of every handled bird with the authorised handler or wildlife rehabilitator.

Record the release location, date, habitat condition and any post-release observation where this is required by the approval or fauna management plan.

Do not release a bird into unsuitable habitat, close to active machinery or outside the authorised release process.

After habitat disturbance: 5. Review

Hold a post-clearance review with the spotter catcher, site supervisor and ecologist.

Check whether survey timing, exclusion zones, crew induction and clearing sequence worked as intended.

Carry lessons into the next clearing stage and retain the records for future projects in the same area.

Rehabilitation actions: 1. Restore habitat structure

Rehabilitation should restore connected, structurally diverse vegetation rather than simply replace individual trees. Focus on canopy trees, fruiting plants, woodland edges and safe links between retained habitat patches.

Protect retained mature trees during earthworks and establish root protection and no-storage zones around them.

Replant locally appropriate native canopy and mid-storey species that provide shelter, perches and seasonal fruit. Match species selection to the local vegetation community.

Create continuous or stepping-stone canopy links between retained patches where the landscape allows.

Allow vegetation to develop into a layered woodland structure, while controlling competition around establishing plants.

Rehabilitation actions: 2. Nesting and artificial structures

Do not assume nest boxes are suitable. Olive-backed Orioles build open cup-shaped nests on horizontal outer branches, rather than using hollows.

Where breeding habitat is limited, ask a bird ecologist to assess whether artificial nest supports or other open nest structures are appropriate for the local site and approvals.

Do not install bat boxes, hollow-dependent bird boxes or enclosed structures as substitutes for this species unless they are required for other fauna.

Protect natural horizontal branches and outer foliage in mature trees, as these are more relevant than nest boxes for this species.

Rehabilitation actions: 3. Food and water resources

Retain and establish native fruiting trees and shrubs suited to the local community. Maintain a range of species so fruit is available across different seasons.

Avoid planting invasive or potentially invasive fruiting species. Remove weeds before they dominate the understorey or suppress regeneration.

Provide water only where it can be maintained hygienically and will not create erosion, disease or predator risks. Keep artificial water points away from machinery and domestic animals.

Rehabilitation actions: 4. Weeds, predators and disturbance

Control weeds progressively and protect regenerating native plants during weed treatment.

Manage feral cats, foxes, pigs, goats and rabbits where they threaten revegetation or native fauna, in accordance with the land manager's control program.

Limit night lighting near retained canopy and rehabilitation areas. Use the lowest practical intensity, direct lights away from vegetation and avoid lighting likely flight paths.

Manage fire so that mature trees, nests, regenerating plants and connected habitat are not damaged.

Rehabilitation actions: 5. Long-term monitoring

Inspect rehabilitation areas regularly for plant survival, canopy development, fruiting, weed invasion, erosion and browsing.

Record Olive-backed Oriole sightings, calls, feeding activity and any nesting use during suitable seasonal surveys.

Adapt planting, weed control, watering and protection measures when monitoring shows that habitat is not developing as intended.

Retain rehabilitation records, maps and photographs so outcomes can be assessed over time.

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