Susan Brown, Butterfly

 AS BUTTERFLIES GO, THE BROWN AWL ISN'T MUCH OF A MARVEL TO LOOK AT. But the same once couldn't be said for its behaviour, as twice a year millions of Brown Awls darkened Queensland skies migrating 2000 kilometres between Cape York and Central Queensland. Around eight years ago, scientist Peter Valentine was just getting around to celebrating the migrations as on of Australia's natural wonders when they stopped. They haven't happened since and although Valentine has his suspicions the pieces didn't fall into place until last year.

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