Against a field of snow, it can be very difficult to find reindeer moss, as it is typically a pale, almost white lichen. From a distance, humans wouldn’t be able to distinguish it from snow.

Reindeer subsist largely on light-colored reindeer moss, which isn’t actually a moss but rather a type of lichen that grows in crunchy, carpet-like patches across northern latitudes.

Reindeer subsist largely on light-colored reindeer moss, which isn't actually a moss but rather a type of lichen that grows in crunchy, carpet-like patches across northern latitudes.

Rudolph the Red-Nosed Reindeer is famous for pulling Santa's sleigh, but researchers from the US and UK say its reindeer's vision that really sets them apart.

Researchers traveled to the Cairngorms mountains in the Scottish Highlands, which hosts more than 1,500 species of lichen as well as Britain’s only reindeer herd. They found reindeer moss ...