Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet initiative has ...

The detailed study of Western Australia’s white-tailed black cockatoos has revealed that repairing natural tree hollows is a ...

Christina N. Zdenek receives funding from the Australian Research Council and has worked as a biological consultant for both a mining company and ecological consulting company on Cape York Peninsula.

It’s a sound somewhere between a hoarse car alarm and a braying donkey. Barely visible through the foliage from ground level, the source of the racket sits in the upper branches of a decades-old ...