A couple of years ago one of our farm dams dried out because of drought. The
bottom of the dam developed that lovely hexagonal cracked mud look. When we
finally got enough rain to put some water in the dam it exploded into life.
More tadpoles than I've ever seen in one place before (or since) and heaps
of dragonflies, damselflies and other dam loving species. Common water
plants sprung up where none had been before the drying. The water was
crystal clear, rather than the opaque clay colour it had always been, you
could still see the mud cracks in the bottom. I don't have any theory about
why this happened, but can imagine that the effect, magnified to the scale
of Barmah-Millewa, would attract a lot of birdlife.
Paul Osborn
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www.birding-aus.org
birding-aus.blogspot.com
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