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Published byEdith Miller Modified over 6 years ago
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Case study: Night Parrot surveys and management at Lorna Glen
Allan Burbidge and Neil Hamilton
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History In district, from 1896 - Keartland at Lake Carnegie
Others eg Glen Ayle in 1970s Possible sightings in district mid-late 2009 Lorna Glen: Neil Hamilton & Mike Onus Dec 2009
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Response Immediate response :
Searched for an hour with head torches, spotlight and night ‘scope Details of sighting recorded that night Motion sensitive cameras next morning Senior staff notified, but sighting not advertised; action plan developed No further disturbance until mist nets arrived from Perth& staff from Kalgoorlie
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Follow up Feb 2010, Jun/Jul 2010, Oct 2010, Nov 2011, May 2013, and opportunistic Mist-netting, trapping with drift net, audio recorders, camera traps, spotlighting, night ‘scopes, call broadcast, nest inspections, searching for signs in caves & near water, etc Focus on people with skills & experience with WGP research and searching for NPs Equipment and teams ready for follow-up
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ARUs – autonomous recording units
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2010 recordings
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ARUs – results to date >20 bird species detected
No Night Parrot calls detected Still plenty of files to be looked at (1000’s of hours) Difficult without reference calls
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Motion sensitive cameras
>1000 camera nights, - some with call broadcast - some at natural or artificial water points
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Is there a Night Parrot in here?
Lorna Glen Pilbara 2005 Time consuming to process Pick locations carefully
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Mist-netting 1000’s of mist-net hours
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Drift nets and traps
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Looking for likely habitat
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Signs eg feathers, tracks, nests
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Feeding sign Note: parrots cut stems diagonally, but so do rodents (and grasshoppers?) fresh signs ephemeral Mulga Parrot Unknown herbivore
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Example: November 2011 survey
11 skilled personnel Net hours 1023 birds 77 bats 29 rodents 2 >300 km spotlighting >17 nests searched ca 20 hours area searches
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Why continue at Lorna Glen
Historical records Introduced predator management (trapping, baiting) since 2003 – cats, foxes, dogs
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Introduced herbivore management
– stock removal 2000 onwards – removal of artificial water sources – shooting camels – fencing to reduce entry of camels & cattle
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Habitat Management Some very old Triodia (>50 years post fire)
Fire management plan* in place Resident caretaker and visiting researchers * Burrows, N., and Butler, R. (2011). 'A Fire Management Plan for Lorna Glen (Matuwa) and Earaheedy (Karara Karara) ' Department of Environment and Conservation, Perth.
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Conclusions Four years on ….. Surveys have continued
Appropriate on-going management in place Funding always an issue (remote location) (but thanks for support from DPaW region) Efforts limited by lack of knowledge concerning most appropriate survey techniques Still looking …..
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Acoustic surveys Boucher, N. J., Burbidge, A. H. and Jinnai, M Computer recognition of sounds that have never been heard before. 18th National Australian Institute of Physics Conference, Adelaide. Boucher, N. J The SoundID autonomous sound recorder. AudioWings 12: 8-11.
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