Gull-billed Tern Published December 8, 2011 | By Jack Shick Gull-billed Tern (Sterna nilotica) Wingspan 800mm body weight of 250g This bird was blown over here during winter this year (2011) when we had some very strong West winds. First time I have seen one. Breeds in Australia and Asia. whiskered-tern whiskered-tern whiskered-tern