Preserving the grey range thick-billed grasswren

Key information

This project aims to preserve the grey range thick-billed grasswren in the Milparinka and Packsaddle areas of the downs country in the far west rangelands. 

The 'Threatened species – grey range thick-billed grasswren' project will:

• address habitat loss caused by soil erosion  
• improve the habitat of the grey range thick-billed grasswren and other threatened species of the rangelands.  

Project background

The grey range thick-billed grasswren is one of the most critically endangered bird species in NSW. It was considered extinct in north-west New South Wales until sightings of a small number of birds during 2008. 

This project builds on previous successes in rehabilitating the habitat of the downs country for various species.  

Grey range thick-billed grasswren facts

• Scientific name: Amytornis modestus obscurior.
• Threat level: critically endangered.
• Preferred habitat: bluebush shrubland on stony rises and downs in the arid and semi-arid zones.
• Features: small, short wings built for hopping between bushes and grass tufts rather than long flights.
• Known locations: far north-west of NSW. 

Project objectives

Aims of the project: 

• address habitat loss caused by soil erosion  
• improve the habitat of the grey range thick-billed grasswren and other threatened species of the rangelands. 

A diverse range of animal and plant species are set to benefit from the work.  

The work in this project requires a long-term view. The areas we’re working in don't typically get a lot of rain. It could be 2 to 3 years after the earthworks, in good growing conditions, before the land recovers and the vegetation begins growing back. This attracts the species back into the landscape.

By the end of the project on 30 June 2028, we expect the landscapes at selected work sites to show strong signs of recovery. This recovery includes the return of more plant and animal species to these areas. 

Project delivery

Work includes:  

• rangeland rehabilitation earthworks to rehydrate the landscape, reduce erosion and provide opportunity for grasswren habitat to regenerate  
• monitoring of grey range thick-billed grasswrens and land systems 
• Aboriginal cultural heritage surveys  
• incorporating the knowledge of Traditional Owners into the project  
• enhancing awareness of the species within the landholder community.

Project timeline

2024:

• site identification through vegetation mapping
• fauna survey
• Traditional Owner consultation
• Aboriginal Cultural Heritage assessment of the planned work sites
• contour assessment and marking out in preparation for on-ground works
• landholder discussions on planned works  

2025:

• site selection (4 sites) for year 2 commences early 2025 with earthworks commencing mid to late year
• community consultation will occur late 2025 for another 8 properties.

2026:

• site selection (4 sites) for year 3 commences early 2026 with earthworks commencing mid to late year
• survey and monitor first 7 sites for improvement and outcome reporting.

2027:

• site selection (4 sites) for year 4 commences early 2027 with earthworks commencing mid to late year.

2028:

• fauna survey (landscape recovery monitoring)
• Traditional Owner and landholder field days
• project close (30 Jun 2028) and outcomes reporting.

Work underway

• 3 sites have been identified using vegetation mapping.
• Discussions about the planned works were held with landowners of the work locations.  
• Aboriginal Cultural Heritage assessment of the planned work sites completed. 
• Consultation with Traditional Owners is underway, including a tour of work sites. 
• A fauna survey is underway before earthworks commence to identify and protect species living in and nearby the work sites.
• Planning for on-ground works is scheduled to be completed by mid-December 2024. This involves assessing the contours of the land and marking them up ready for earthworks that will direct the flow of water to rehydrate the landscape.

How to get involved

Targeted conservation work under the grey range thick-billed grasswren project is taking place on private properties.  

Find out how you can help to restore soil and ecological habitats on your own far west property. Listen to the Pastoral Poddy – Western LLS’ podcast episodes. You can also read the related information below. 

Funding and partnerships

Key delivery partners working alongside Local Land Services are:

• private landholders in the Milparinka and Packsaddle areas 
• Barkandji, Malyangapa and Wilyakali Nations. 

This project is funded by the Australian Government Natural Heritage Trust and delivered by Western Local Land Services, a member of the Commonwealth Regional Delivery Partners panel.