Strong demand and limited supplies continued to drive calf and yearling prices higher during December. Calves saw $10 gains last month while yearlings sold $3 to $4 higher, pushing prices to new record highs in Drovers/CattleNetwork’s exclusive 50-market auction summary. Steer calves weighing 400 to 500 pounds saw average bids of $163.53 per hundredweight, up $10.12 from November. Yearling steers weighing 600 to 700 pounds increased $3.73 per hundredweight to average $138.02. Heifer calves sold for an average of $139.65 per hundredweight, a gain of $4.28. Yearling heifers weighing more than 600 pounds saw average bids of $124.10 per hundredweight, an increase of $2.80.