Swallow-tailed gull and hunting over the open oceans, and migrating eastward to the coasts of Ecuador and Peru. The swallow-tailed gull is unique among the gulls in feeding exclusively nocturnally, mostly on fish and squid which rise to the surface at night to feed on plankton. It leaves the colony as a flock at dusk, with a great deal of screaming and display. Calls and displays are quite different from other gulls, most resembling the vocalisations of the black-legged kittiwake and Sabine's gull. The loudest and most commonly heard call is an alarm referred to as "rattle-and-whistle", a gurgling scream made with
Gull Island (Tasmania) sooty oystercatcher and crested tern. Gull Island (Tasmania) The Gull Island, part of the Passage Group within the Furneaux Group, is an granite island, located in Bass Strait southeast of Cape Barren Island, in Tasmania, in south-eastern Australia. The island is a conservation reserve and with the Passage and Forsyth islands, the Gull Island forms part of the Forsyth, Passage and Gull Islands Important Bird Area (IBA), identified as such by BirdLife International because it supports over 1% of the world populations of little penguins and black-faced cormorants. Recorded breeding seabird and wader species include little penguin, short-tailed shearwater, white-faced