The Crested Tern (Thalasseus bergii) can be found all around the coast of Australia. For me in Victoria, if I am on the coast, its the default tern. I think this is a useful idea in birding - as when I see a tern I can immediately start thinking about the features of one bird - and 90% of the time it's that bird! (If you see what I mean!)
These birds were loafing about at one of my regular birding spots - Swan Bay Jetty. I think that the passing traffic of fisher-folk, boaters, dog walkers and photographers helps calm these birds down. They tend to be a little more cooperative than many.
There was not much going on with these birds, just a bit of yawning and feather maintenance. But I still like them.