Data were collected, for 20 consecutive days, on activity patterns in Merino wethers in an outdoor experiment conducted in early summer. A bimodal frequency distribution was found in respect to the activity pattern. Eating and drinking were the principal activities apart from walking between the food and water sources which were 3�2 km apart. Long periods of each day were devoted to idling. Onset of activity was found to be highly correlated with sunrise but cessation of activity showed no relationship with sunset. The relation of these observations to behaviour of free-ranging sheep is discussed. Published in Animal Behaviour, volume 19, issue 4, on pages 3 - 3, in 1971.