Like many migratory songbirds, tree swallows are experiencing population declines in parts of their breeding range.
Effective conservation of migratory songbirds requires an understanding of how populations are connected between seasons. The challenge is being able to track individuals throughout the entire year.
Eyes in the sky: drone footage is becoming a vital tool for monitoring ecosystems.
Deakin Marine Mapping Group
Ecology is in the midst of a technological revolution. From tiny sensors that can be fitted to animals, to swarms of remotely-piloted drones, researchers have a host of new ways to study the natural world.
Tundra swans, which nest in the Arctic and migrate south in fall, alight at Mattamuskeet National Wildlife Refuge in North Carolina.
The Interior Department is narrowing protection for migratory birds to cover only deliberate harm such as hunting, but not threats like development or pollution that kill millions of birds yearly.
Sudden droughts are bad news for political stability worldwide.
A new international report makes for bleak reading on the state of the world's soils. It predicts that land degradation will displace up to 700 million people worldwide by mid-century.
A giant swallowtail butterfly feeds from the flower of an alternate-leaved dogwood.
We're in the middle of an Insectageddon. But a garden of native plants can help insects, as well as birds and other wildlife.
Koalas are stressed out by a range of pressures, from habitat loss to dog attacks.
Ever feel so stressed you can't carry on? You're not alone - koalas have a similar problem, and hundreds are being rescued by veterinarians each year.
This quenda seems to have been a victim of land clearing.
More than 50 million birds, mammals and reptiles are thought to be killed each year in New South Wales and Queensland by the removal of native vegetation, and planning laws are failing to protect them.
Are we in the middle of a mass extinction caused by Homo sapiens? Past events can help us to understand the current crisis.
Land reform is thought to have caused the cheetah numbers to fall by 85% in Zimbabwe.
The land reform programme in Zimbabwe has come at the cost of wildlife and opens up the debate on people versus nature. But there is a way forward.
The birds commonly seen in urban backyards of Australia are increasingly introduced species like this house sparrow, sharing a birdbath with a native red-browed finch.
We all know how vital it is for our native bird species to thrive. But what if the only birds that visit your garden are introduced "pest" species? Many people feel these birds deserve some love too.
When species are pushed to the top of the mountain, where else is left to go?
From luxuries like champagne to the very livelihoods of fishing communities in the developing world – the climate-driven shifts in species will affect us all.
The human footprint on Australia’s environment is evident in areas such as land use change.
Ryan Francis/State of the Environment 2016
The State of the Environment 2016 report shows that the main drivers of environmental change in Australia are land-use change, habitat destruction, invasive species and climate change.
The Simien mountains in Ethiopia are one of the world’s most threatened natural heritage sites.
Simien mountains image from www.shutterstock.com
You'd hope we wouldn't flatten the pyramids to build a highway. But that's exactly what's happening to the world's natural heritage sites.
Cleared habitat in Niassa Reserve, Mozambique.
Since 1992, an area of land two-thirds the size of Australia has been converted to human use.
Sea turtles have been around for 150 million years, but today’s pace of climate change represents an existential challenge.
Climate change and tourism development in Mexico are altering the country's shoreline, endangering the habitat of sea turtles. But tourists prefer pristine, natural beaches, too.
Cheetahs have extraordinarily low genetic diversity, placing them at risk.
Copyright Amy Nichole Harris/Shutterstock
Wildlife in wilderness areas have more genetic diversity, which is better for their survival.
As temperatures rise, will species have enough habitat to move to suitable ground?
Animals and plants will need escape hatches to move to cooler climes as the planet warms, but few parts of the U.S. have the natural habitat available for these migrations.
New research explains why habitat loss means male willow warblers now outnumber females – and that's bad news for the species.
Koalas face many threats, and our conservation efforts are failing them.
Koala image from www.shutterstock.com
Koalas are under threat from a range of factors, from urban expansion to climate change. Unfortunately there is no quick fix, and it may be that not all populations can be saved.
Worth crowing about? Birds that can problem-solve do best in cities.
Why are our cities full of crows, ravens and rainbow lorikeets, while other species decline? The answer comes down to street smarts, adaptability, and sometimes plain bullying.