Native mouse believed to be extinct for 150 years found off Western Australia

Gould's mouse found on several small islands off coast of WA after population collapse on mainland

Scientists have discovered that an extinct native mouse thought to have been wiped out more than 150 years ago is thriving on islands off Western Australia.

Researchers compared DNA samples from eight extinct native rodents and 42 of their living relatives to study the decline of native species since the arrival of Europeans in Australia.