These eggs are only found in the eye of the storm, a dangerous location protected by rustling winds and crackling thunder. There, they slowly solidify into a corporeal form. However, if disturbed they may disappear into the winds. If you find a Habba egg, be careful not to touch it.
Habbas are known for riding the winds and playing in the breeze. Sometimes, they'll be the cool breeze on a burning hot day or a shade of clouds from the shining sun. However, more often than not they are the harbingers of a thunderous storm. Their antlers are lightning given form, shifting between the clouds they gallop within. Their hooves are the gales they use to command the sky and summon the hurricane.
The SAR Center in Ark City uses their movements to help predict tornado and weather trends. Many Arkians have been helped by this knowledge, whether it be to bring an umbrella when they go outside or to find shelter to hide from the coming storm.