Tasmanian tigers on Australian mainland 'killed off by drought'

Researchers say onset of El Nino weather patterns was the likely cause of the thylacine's demise

Drought was to blame for the extinction of Tasmanian tigers from the Australian mainland, a new study by the University of Adelaide has found.

After examining DNA from fossil bones and museum specimens, researchers say the onset of El Nino weather patterns was the likely cause of the thylacine's demise.