North America has lost an estimated 3 billion birds since 1970—a nearly 30% drop across species—mostly due to habitat loss and degradation. So when a team of researchers repeated a bird population ...

When I started bird-watching as a teenager, a few years after the first Earth Day in 1970, several species that once thrived in my region were nowhere to be found. Some, like the passenger pigeon, ...

Large birds -- our closest relations to dinosaurs -- are capable of technical innovation, by solving a physical task to gain access to food. Large birds -- our closest relations to dinosaurs -- are ...

A 30-year study found many bird species in these timberlands are bucking continental population trends, upending assumptions about logging and habitat loss North America has lost an estimated 3 ...