This egg was only given out for Earth Day 2013.
The green emerald on Lyf eggs are very valuable. Unfortunately, removing them causes the egg to die.
Lyfs are flying machines that can fly for hundreds of miles without stopping for food or water. They often travel in small packs of between one and two dozen.
Once you become a part of a Lyf pack, you cannot leave the Lyf pack. It is a sign of deep betrayal. If a Lyf does leave its pack, the pack will hunt it until it's dead.
Lyfs eat smaller bugs like bees, mosquitos, and gnats. Their effects are generally very positive on the environment. They aren't pests.