From December 2011 to February 2012 and from November 2012 to January 2013, we conducted research on Whooper Swan Cygnus Cygnus diurnal activity allotment and rhythm at the Yellow River wetland in Pinglu using instantaneous scan sampling methods. The chosen study area was the Yellow River wetland at Sanwan and Guanjiawo villages in Pinglu, Shanxi Province because the ecological environments at these two locations are similar, and they are both close to rivers and winter wheat fields. There are relatively high numbers of tourists at Sanwan every day, so the human interference level there is relatively high. Guanjiawo, on the other hand, is closer to natural conditions with relatively low human interference levels. We categorized the activities of Whooper Swans into seven behavioral types: foraging, locomotion, resting, maintenance, alerting, fighting, and calling. We recorded the activity types of 10 Whooper Swans every 10 minutes between 7:00 and 18:00. At the same time, we recorded the local temperature (accuracy of 1°C) and calculated the diurnal average temperature as the average of temperatures at 6:00, 12:00, and 18:00. During the wintering period, the major behaviors of Whooper Swans were resting, locomotion and foraging, which accounted for 40.5%, 22.8% and 18.2% of the total behavior, respectively. The peak foraging times were 7:00-8:00 and 17:00-18:00, and the peak resting times were 7:00-8:00 and 12:00-13:00. Peak maintenance time was 12:00-13:00, and peak calling and fighting time was 10:00-11:00. Results of a Chi-squared test showed that with the exception of fighting activity (x²=17.17, df=10, P=0.071), the diurnal rhythms of all other activities were highly significant. Results comparing the diurnal activity allotment of Whooper Swans in areas of different human disturbances showed obvious differences in their behavior patterns. Compared with Guanjiawo, which is a site of less interference, the Whooper Swans in Sanwan spent more time on locomotion and fighting, and spent less time on resting and alerting. Investigations into the relationship between Whooper Swan behaviors and local temperatures, as determined by Pearson correlation analysis, showed that the behaviors of foraging, locomotion and maintenance were significantly positively correlated with temperature, while the behaviors of resting and alerting were significantly negatively correlated with temperature.