Abstract The position of individual sheep in moving flocks of 20 Merino and 20 Border Leicester sheep was recorded automatically on 35 occasions over a 10-day period. In both breeds there were sheep which were always among the leaders and there was a definite ordering among the followers. Fewer sheep shared the lead among Merinos than among Border Leicesters. Sub-grouping of the Border Leicester flock accounted for the greater inconsistency in movement order; Merinos always moved as a single flock. Dominance-subordination relationships were assessed on one occasion for each breed separately by creating competition for space at a self-feeder. Among Merinos, the dominance hierarchy was almost linear but Border Leicesters were less rigidly structured. The correlation between position in a moving flock and social dominance was high.