[@Dark Cloud]Well, I don't plan on them traveling to the rainforest or something. Or the desert. They'll mostly migrate around on the steppes. Eat all the grass in an area and then move on so it can regrow. They aren't so much nomads in that they travel to a variety of places, just in that they don't settle permanently. 

*Also, they aren't un-adaptive. Or Sedentary, whatever the trait is. They can adapt to other environments about as well as the average.