How is the Waterbirds Project collecting waterbird breeding and movement information?
We’re collecting information through field research in and around known waterbird nesting sites at wetlands within the Murray-Darling Basin. These sites included Barmah-Millewa Forest on the NSW-Victoria border, Macquarie Marshes in NSW, and Kow Swamp and Kerang Lakes in Victoria.
From 2015-2019 as part of the MDB EWKR (Murray-Darling Basin Environmental Watering and Knowledge Research) Project we used three exciting techniques to collect data:
On-ground field surveys
Field surveys were conducted at breeding sites to identify the species breeding, track the number and size of breeding colonies (which can change over time during a breeding season), monitor changes in water levels, and identify critical nesting habitat characteristics. Field surveys were also conducted at foraging sites to identify critical foraging habitat locations and characteristics and estimate foraging success rates.
Satellite GPS tracking devices and bird banding
A total of 64 satellite GPS tracking devices were deployed on straw-necked ibis (42 trackers), Australian white ibis (7 trackers), and royal spoonbill (15 trackers) adults and juveniles to track movements of individuals during and after nesting. From this data we can identify where and how far birds are travelling to feed and to get food for chicks, where juvenile birds are dispersing to once independent, and where adults disperse to after breeding. We also expect to be able to establish whether individuals return to the same sites to breed in subsequent years. This will be one of the largest satellite GPS tracking studies of any bird species in Australia. We also attached identification bands to the legs of birds to permanently track their individual movements throughout Australia, contributing valuable knowledge to the Australian Bird and Bat Banding Scheme (ABBBS).
Check out the reasons why we are satellite tracking straw-necked ibis HERE
Motion-sensing and time-lapse cameras
Monitoring cameras were focused on nests in breeding colonies throughout the breeding season. By analysing camera images we’re able to quantify the survival of chicks through to fledging, and the influence of threats like predation and water level changes. All these factors are essential to filling our two critical knowledge gaps.