Terns are tough - on that much we can all agree. A lot has been written on their ID in Europe and the Americas, but all from a Northern Hemisphere perspective. If a mixed flock of terns makes you want to tern tail and run, this article is for you. I discuss the Identification of Common, Roseate and Arctic Terns, as well our own special visitor from the frozen south - the Antarctic Tern. Along the way, you'll spot the odd tern of phrase - most of them not very punny. Good luck!