5 April: Very stormy [and] warm in the morning. South wind. At seven thirty, 59 3/4°F [15.4°C]. Upriver the ice was still solid; it broke loose and [then] stopped again. The river rose about one foot during the night but dropped a few inches in the morning. About midday it suddenly rose by three to four feet, and at twelve o’clock the upper ice broke loose. At twelve o’clock, 68°F [20°C]. Strong wind from the south. Today a Mandan was drawn wearing a buffalo head. Síh-Sä shot a creek duck (Anas crecca). The Indians had another festivity on the prairie. Evening calm and warm.