Add Yahoo as a preferred source to see more of our stories on Google. Will Hawkes, CC BY-ND In 1950, ornithologists Elizabeth and David Lack were watching birds migrate through a Pyrenean mountain ...

Pyrenean glaciers like the Pico Viñamala (pictured), are the last remaining traces of the frozen masses formed during the Ice Age. Pascale Bourget/Wikimedia Commons, CC BY-SA A fine mist accompanies ...

Imagine the white magic of snow-covered pine forests at 2,000 metres, icy water... and silence. This is the scene offered in the heights of the Pyrenees to those who want to follow the example of ...

In 1950, ornithologists Elizabeth and David Lack were watching birds migrate through a Pyrenean mountain pass on the border between France and Spain when they stumbled across something extraordinary – ...