Biologists argue that more research needs to be done on the colorful yet poisonous harlequin toads of Central and South America, not only because their ecology is poorly known, but because their ...

The starry night harlequin toad — so-called for its white-spotted black colouration — has been photographed by scientists for the first time since 1991. The toad, whose proper name is 'Atelopus ...

Melissa Costales stood in the dark, listening to the sounds of insects chittering in the cloud forests of northern Ecuador. It was August 2019 and Costales, a conservation biologist at University of ...

There's a magical mountain on the Colombian coast, said Lina Valencia, a biological anthropologist and Colombia conservation officer at Global Wildlife Conservation. The 18,700-foot peak, Sierra ...

A species of endangered toad endemic to Colombia’s Sierra Nevada de Santa Marta mountains is clinging on for dear life. The tiny Santa Marta harlequin toad (Atelopus laetissimus), which is just 4 ...

A critically endangered toad belonging to one of the most threatened groups of amphibians in the world has been documented by scientists for the first time in 30 years. The starry night harlequin toad ...

The indigenous Arhuaco people of the Sogrome community living in Colombia’s Sierra Nevada de Santa Marta have been residing alongside the the starry night harlequin toad (Atelopus arsyecue) for ...

While frog and salamander declines worldwide have made scientists outspoken about the need to preserve amphibian genetic diversity, two University of California, Berkeley, biologists emphasize another ...