Further records and breeding of the Eyrean Grasswren Amytornis goyderi in New South Wales

Thomas J. Hunt, Reece D. Pedler, Rebecca S. West


Abstract

Eyrean Grasswrens Amytornis goyderi have generally been considered habitat specialists associated with Sandhill Canegrass Zygochloa paradoxa on the dunes of inland Australian deserts in the Lake Eyre Basin. Following above-average rainfall in 2020–2022 and an associated vegetation response in the Strzelecki Desert, Eyrean Grasswrens were observed at 39 locations south-east of their known distribution, with sites up to 11 km inside New South Wales, well beyond the extent of previous easterly records on the New South Wales–South Australia border. Further, two sites were north of the New South Wales–Queensland border, confirming the species 380 km south of previous Queensland records. Nine sites were within feral-free exclosures at the Wild Deserts project site in Sturt National Park, New South Wales. Repeated observations between May 2021 and August 2022 suggest persistence for at least 16 months in ephemeral vegetation on sand dunes supporting no Sandhill Canegrass. Two instances of breeding were recorded, with juvenile birds and feeding by an adult male observed. We explore possible drivers for this apparent range expansion and future scenarios around persistence inside landscape-scale exclosures, within which theorised threats from feral predators and overabundant herbivores are absent, presenting an opportunity to assess the relevancy of these drivers on the ecology of Eyrean Grasswrens.

References


Atlas of Living Australia (2022). Amytornis goyderi occurrence Available online https://doi.org/10.26197/ala.0c0f0bd4-b6f8-4b22-8ab4-d633102981eb (accessed 4 August 2022).

Black, A. & Gower, P. (2017). Grasswrens: Australian Outback Identities. Axiom, Adelaide.

Black, A., Carpenter, G., Jaensch, R., Pedler, L. & Pedler, R. (2015). A survey of outlying populations of the Grey Grasswren Amytornis barbatus. Corella 39, 25–37.

Black, A., Carpenter, G. & Pedler, L. (2011). Distribution and habitats of the Thick-billed Grasswren Amytornis modestus and comparison with the Western Grasswren Amytornis textilis myall in South Australia. South Australian Ornithologist 37, 60–80.

Bureau of Meteorology (2022). Previous droughts. Bureau of Meteorology, Canberra. Available online: www.bom.gov.au/climate/drought/knowledge-centre/previous-droughts.shtml (accessed 11 June 2022).

CSIRO (2022). ‘VegMachine®’. Available online: https://vegmachine.net/ (accessed 15 May 2022).

Cunningham, G.M., Mulham, W.E., Milthorpe, P.L. & Leigh, J.H. (2011). Plants of Western New South Wales. CSIRO Publishing, Melbourne.

Department of Climate Change, Energy, the Environment and Water (2020). Interim Biogeographic Regionalisation for

Australia (Subregions - States and Territories) v. 7 (IBRA) [ESRI shapefile]. Available online: https://www.environment.gov.au/fed/catalog/search/resource/details.page?uuid=%7B1273FBE2-F266-4F3F-895D-C1E45D77CAF5%7D (accessed 4 August 2022).

Hardy, J.W. (2010). Distribution, status and options for the future management of the Grey Grasswren Amytornis barbatus barbatus in New South Wales. Corella 34, 25–35.

Higgins, P.J., Peter, J.M. & Steele, W.K. (Eds) (2001). Handbook of Australian, New Zealand & Antarctic Birds, Volume 5: Tyrant-flycatchers to Chats. Oxford University Press, Melbourne.

Kingsford, R.T., West, R.S., Pedler, R.D., Keith, D.A., Moseby, K.E., Read, J.L., Letnic, M., Leggett, K.E.A. & Ryall, S.R. (2021). Strategic adaptive management planning—Restoring a desert ecosystem by managing introduced species and native herbivores and reintroducing mammals. Conservation Science and Practice 3, e268.

Letnic, M. & Koch F. (2010). Are dingoes a trophic regulator in arid Australia? A comparison of mammal communities on either side of the dingo fence. Austral Ecology 35, 167–175.

May, I. (2001). Eyrean Grasswrens (Strzelecki Desert, SA). Birding-Aus 27 September 2001. Available online: http://bioacoustics.cse.unsw.edu.au/archives/html/birdingaus/2001-09/msg00373.html (accessed 4 August 2022).

McAllan, I., Cooper, D., Kenway, P., Moody, M. & Martin, D. (2017). The first records of the Eyrean Grasswren Amytornis goyderi from New South Wales. Australian Field Ornithology 34, 131–136.

Morcombe, M. & Stewart, D. (2021). The Michael Morcombe & David Stewart eGuide to Australian Birds (version 1.5). My Digital Earth [Mobile application]. Available online: https://apps.apple.com/au/app/morcombe-stewart-guide/id397979505

Morgan, D.G., Morgan, R.L., Robinson, L.N., Robinson, P.A. & Ashton, D.H. (1961). The Eyrean Grass-wren (Amytornis goyderi). Australian Bird Watcher 1, 161–171.

Newsome, A.E., Catling, P.C., Cooke, B.D. & Smyth, R. (2001). Two ecological universes separated by the dingo barrier fence in semi-arid Australia: Interactions between landscapes, herbivory and carnivory, with and without dingoes. The Rangeland Journal 23, 71–98.

Parker, S.A. (1980). Birds and conservation parks in the north-east of South Australia. South Australian Parks and Conservation 3, 11–18.

Parker, S.A., May, I.A. & Head, W. (1978). Some observations on the Eyrean Grasswren Amytornis goyderi (Gould, 1875). Records of the South Australian Museum 17, 361–371.

Pedler, R.D., Brandle, R., Read, J.L., Southgate, R., Bird, P. & Moseby, K.E. (2016). Rabbit biocontrol and landscapeâ€scale recovery of threatened desert mammals. Conservation Biology 30, 774–782.

Pedler, R.D., West, R.S., Read, J.L., Moseby, K.E., Letnic, M., Keith, D.A., Leggett, K.D., Ryall, S.R. & Kingsford, R.T. (2018). Conservation challenges and benefits of multispecies reintroductions to a national park – a case study from New South Wales, Australia. Pacific Conservation Biology 24,

–408.

Pizzey, G. & Knight, F. (2020). Pizzey & Knight Birds of Australia Digital Edition (version 1.3). Gibbon Multimedia [Mobile application]. Available online: https://apps.apple.com/au/app/pizzey-and-knight-birds-of-aus/id714625973

Rees, J.D., Kingsford, R.T. & Letnic, M. (2017). In the absence of an apex predator, irruptive herbivores suppress grass seed production: Implications for small granivores. Biological Conservation 213, 13–18.

Rehberg, C. (2021). eBird Checklist S99736480 28 Dec 2021 Winnathee Station Homestead. Available online: https://ebird.org/ebird/view/checklist/S99736480 (accessed 4 August 2022).

Rowley, I. & Russell, E.M. (1997). Fairy-wrens and Grasswrens: Maluridae. Oxford University Press, Oxford, UK.

Schodde, R. (1982). The Fairy-wrens: A Monograph of the Maluridae. Lansdowne Editions, Melbourne.

West, R.S., Letnic, M., Blumstein, D.T. & Moseby, K.E. (2018). Predator exposure improves anti-predator responses in a threatened mammal. Journal of Applied Ecology 55, 147–156.