This material is the subject of copyright protection under the Australian Copyright Act 1968. Other than for the purposes of and subject to the conditions prescribed under the Copyright Act, no part of it may, in any form or by any means, be reproduced, stored in a retrieved system or transmitted without prior written permission.
It is illegal to reproduce photographs taken by a professional photographer or other copyrighted material without the permission of the copyright owner. As with any image, your possession of a copy of a digitized image does not give you any rights to use it as you wish. The copyright of an image is generally owned by the photographer and only the copyright owner, or the owner's legal agent, can give you permission to copy, distribute, or publicly display the image.
You are welcome to enquire regarding details of obtaining such permission from the Parks and Wildlife Service.