Once fully grown the Crested Tern sits between 41-52 cms. When in breeding mode, like the guy above, they grow a shaggy black crest on the crown and nape that resembles a mohawk giving them more attitude than the sleek and trim Silver Gulls. They are very common around the mainland and Tasmanian coasts and have been known to travel up rivers some considerable distance inland.
Terns are long-winged short-legged waterbirds that feed in salt or fresh water. They often occur in flocks and will stand around on the sand intermingling with gulls, like the Silver Gull. Terns are similar in appearance but the easiest way to tell them apart is by the colour of the bill.