Acknowledgements and Copyrights

Copyright on material provided to COG

Members and non-members who offer photos and other material to be placed on this website (notably in the Photo Gallery) or in Gang-gang or elsewhere must generally give COG the right to publish and use the material without restriction. The donor will still own the copyright and remains free to use or sell their material in any way they wish.  If copyright holders of material previously provided do not wish to give COG these rights they should notify the Secretary who will arrange to have the items removed. COG’s official copyright policy is below.


COG Copyright policy

When original material such as text, photographs, videos, sound recordings, drawings and other original created material are gifted or donated to COG by the creator and copyright holder, or otherwise provided for publication, the creator shall grant to COG an unlimited non-exclusive licence to use the material, unless different arrangements have been agreed to in individual circumstances..

COG may use the material in all COG activities including but not limited to: use on the COG website, in COG free publications (including Gang-gang and Canberra Bird Notes [CBN]), in COG publications which are sold for the purpose of raising revenue for COG, and in COG social media. COG will acknowledge the creator of the material in each case.

In regards to photographs, videos and sound recordings, COG may also give permission to third parties for use or publication of the material in circumstances where COG has determined that this use is consistent with the objectives of COG and where the third party does not derive financial benefit from the use. Third parties are required to acknowledge the original creator and the source of the material in any such use, with phrasing such as Photo credit: [photographer’s name] via

COG will endeavour to ensure that actual or potential donors of material are made aware of this policy.

Enquiries can be directed to

Bird Calls

The bird calls for this site are used by kind permission of their owner, Mr Fred van Gessel, Professional Wildlife Sounds .

They are from his Australian Bird Call Series, Birds of the Greater Sydney Region, on 3 CDs, which are available for sale from his website, or by contacting Fred van Gessel: