Day 6, Birdsville to Dalby
Our first job of the day is counting along the mighty Diamantina River south of Birdsville before heading east to Lake Yamma Yamma and over the Cooper Creek floodplain, upper Bulloo and Warrego Rivers – that will be a journey of over 1,980 km.
Photo: Cooper Creek floodplain patterns
Survey details
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Date
Monday 6th October 2025
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Author
John Porter
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Project
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Observers
John Porter (NSW DCCEEW), Chris Sanderson
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Pilot
Thomas Clark
Many of the larger Diamantina waterholes are holding water and floodplain vegetation is just starting to dry back from the deep green after flooding earlier in the year.Ìý There are moderate numbers of waterbirds – Pelicans, cormorants, herons, spoonbills, Grey Teal, Black Duck and Wood Duck.
Lake Yamma Yamma (which fills from Cooper Creek) is one of the largest desert lakes in Queensland with a massive surface area of 72,000 ha. It only fills to capacity once every 20-30 years with the last major fill in c. 2000.
Today's count is low with small numbers of Pelicans, cormorants, Wood Duck and terns and there are no breeding rookeries detected.
The deeper Cooper Creek channels are still holding a little water and floodplain vegetation, though prolific after recent flows it is starting to transform into multiple shades of brown as temperatures climb and moisture levels recede.
There are relatively few waterbirds and we count small numbers of Grey Teal, Black Duck, Wood Duck, spoonbills and ibis.
The upper Bulloo and Warrego Rivers have only moderate amounts of water in their deeper billabongs and channels and there are only small numbers of waterbirds to be found
The last section of our counting today is mainly small dams, swamps and lagoons along creeklines and watercourses with relatively small numbers of waterbirds. Finally near Kingaroy are the larger wetlands of Wooroolin Swamp and Lake Barambah and these have moderate to high numbers of waterbirds -Lake Barambah has a large mixed flock of several thousand cormorants (Great and Little Black Cormorants) as well as hundreds of Pelicans.
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Before we retire for the night we make sure we have re-fueled ready for a full day of surveys tomorrow.