On the prowl in the outback.
Hugh McGregor/Arid Recovery
For the first time, researchers have estimated the toll taken by feral and pet cats on Australia's bird life - and the numbers are high enough to push several species towards extinction.
Scottish beeches – the slowest invasion in history?
Beeches are 'non-native' to Scotland because they got there less than 7,000 years ago. No, really.
These migratory pied imperial-pigeons in Far North Queensland, like many of Australia’s 22 species of native pigeons and doves, play an important role in our ecosystems but may be at risk from emerging viruses in domestic pigeons.
Two recently emerging viruses in domestic pigeons in Australia may pose a significant threat to Australia's 22 species of native pigeons and doves, many of which have crucial ecosystem roles.
Seed-eating birds like this male king parrot enjoy birdbaths - but they like food even more.
Is providing birds with food and water making them too dependent? Or are gardens just the new frontier of Australia's urban landscape? New research aims to find out.
Some of the many species in the Australian National Insect Collection.
At least 100,000 insects are among the many Australian species still to be formally identified. That's a problem for any biosecurity experts who need to be able to spot potentially invasive bugs.
The fate of this koala could depend on some clever computer modelling.
Computer modelling can help predict where a species will best survive, especially those affected by climate change.
Antarctica’s delicate ecosystem could be under threat from invasive species.
A warming Earth could see invading species arrive in Antarctica via the floating "taxi service" of the sea. That could be a threat to the southern continent's delicate ecosystem.
Nicotiana benthamiana growing in the wild in coastal northern Western Australia.
Australia's risks losing its valuable native plants that could help solve a global food problem. So do we need new laws to stop the seeds being taken overseas?