Iceland is an island of extremes, where some of Europe's biggest glaciers cozy up to some of the continent's hottest volcanic springs.

Three birds -- the whooping swan, the ptarmigan, and the gyrfalcon -- figure prominently in Icelandic myth.

Icelanders are increasingly aware that they bear responsibility for preserving nature, including some of the world's most important bird nesting grounds.

View additional resources, online and in print, for NATURE's "Iceland: Fire and Ice."

For many animals, the urge to move when the days change length and temperatures vary is programmed into their genes.