Herons - S1.E19

When a party of tourists spot - and photograph - a scary, hairy 'Jamieson Gully monster', the media swoop down in droves. The boys set off of to track down the 'Yowie' but when they do come upon it, they run back to the house, terrified. It's the girls who finally confront it. What is this strange, loping beast lurking in the undergrowth? And what does it want?