As soon as winter takes its leave cow-fighting fever takes a hold on Valais. Released from their stalls, the cows are ready to face any challengers in order to establish the hierarchy within the herd. Regional elimination heats are held from the end of March culminating in the crowning of the queen at the national final in Aproz. From mid-June, with the annual transhumance to the alpine pastures, the summer pasture contests are held, followed by some alp contests throughout the summer and some competitions in autumn when the cows return to the plain.