Would definately say they don`t bolt as good when a cold easterly is blowing . Went down to me mates in lincoln at the weekend and on the sunday it was cold with a easterly blowing and snow blizzards drifting in rabbits just kept on going deeper into the setts extremely reluctant to bolt and that was even with a good number of ferrets in . So needless to say had many a deep dig doh loved it all the same got to take the rough with the smooth aye