Study finds only 300 swift parrots could remain as Tasmanian court challenge heard

Former Greens leader Bob Brown warns extinction is coming rapidly for the species as he goes to court over forestry agreements

Fewer than 300 critically endangered swift parrots could remain in Australia, a new study has revealed, as a court challenge against logging in their Tasmanian habitat was heard in the federal court.

The former federal Greens leader Bob Brown has taken state-owned logging group Sustainable Timber Tasmania, and the state and federal governments, to the federal court over forestry agreements his foundation believes are unlawful.