This egg was only available in Egg Cave's Cash Shop Park for January 2014.
Khione eggs are unique in the fact that they are never laid in a nest, but only on the ground where permafrost is present. Due to Ark's lack of colder areas, Khione eggs are generally found during the winter. A Khione egg will die within seconds of being exposed to temperatures above freezing point, so it is generally recommended that if one is found, it should be set in a freezer to incubate. However, this must be done with very thick gloves due to a unique and very cold substance on the outside of the egg that can give frostbite almost instantly.
When a Khione egg hatches, the creature inside will cover itself with the unique substance on the outside of its egg to protect itself from heat. Because of this, Khione birds can survive for rather long periods of time in warm weather. However, because of their distaste of warmth, their migration patterns tend to keep them in colder places during warm seasons, thus causing them to only show up around Ark during January. Due to their rarity, Ark citizens consider it to be a sign of good luck if they see one on New Year's Day.