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Last recorded on Lord Howe Island in 1918 and Norfolk Island in 1923. The competition from the introduction of the European starling, song thrust and common blackbird, as well as predation from black rats and clearance of natural habitat for agriculture, are factors considered to have contributed to its extinction. [1]
Red-crowned parakeet (Lord Howe Island), Lord Howe parakeet
Lord Howe Island
Last recorded in 1869. Their main threat was hunting and trapping by settlers. It was previously considered to be plentiful on the island, however, they were labelled a pest as large numbers destroyed cultivated crops and gardens.[3]
Last recorded in 1908 when a specimen was collected. It is considered to have become extinct after ts shrubland habitat was burnt repeatedly to convert it into pasture in the early 20th century.[4]
Driven to extinction in Australia in 1805, however, two captive specimen which had been transported to Paris died in 1822. Excessive hunting for food by the early seal-hunters who used specially-trained dogs to catch and kill the birds is believed to be the cause of their extinction.[5]
Last published record in 1819, considered to have become extinct due to repeated burning by bushfires and being hunted for food by seal-hunters and early settlers.[6]
Date uncertain but around 1927; more recent sightings are sometimes claimed, but have never been confirmed. Cause uncertain, most hypotheses centre on starvation from lack of grass seed after drought, overgrazing, more frequent fires, and introduction of the prickly pear.
^Schodde R, Mason IJ (1999). The Directory of Australian Birds: Passerines. A Taxonomic and Zoogeographic Atlas of the Biodiversity of Birds in Australia and its Territories. Collingwood, Australia: CSIRO Publishing. pp. x 851 pp. ISBN0-643-06456-7.
