A variety of different environments are farmed in the Canterbury region. Merino sheep and beef breeding cows are farmed on the high mountains. The main income for farmers in this environment is from fine wool and selling surplus stock to farmers on the plains. Hill country farmers run halfbred and Corriedale sheep, and beef breeding cows. They are able to fatten most of their stock, but do sell some to farmers on the plains. Farmers on the downs and plains run a mixed-farming system, rotating crops and fattening sheep and cattle bought from high and hill country farmers.