The Kyrgyz have historically been semi-nomadic herders, living in round tents called yurts and tending sheep, horses and yaks. This nomadic tradition continues to function seasonally (see transhumance) as herding families return to the high mountain pasture (or ''jailoo'') in the summer. The sedentary Uzbeks and Tajiks traditionally have farmed lower-lying irrigated land in the Fergana valley.