Every April the Narrandera Koala Regeneration Committee and the National Parks and Wildlife Service organise Narrandera’s Annual Koala Count. I was told recently that this is one of the longest-running citizen science wildlife monitoring programs in Australia (or maybe just the longest-running koala-specific one – possibly both, I’m not sure). I don’t remember how long it’s been going, but I think somewhere around 20 or 25 years.