We conducted a study on time budget behavioral daily rhythm of Ferruginous Ducks (Aythya nyroca) at the Baihu Lake in Urumqi, Xinjiang Uygur Autonomous Region from July to November 2012 and recorded their behaviors and time budget. Six types of behaviors were identified as forage, maintain, locomotion, resting, alert and other including all the behaviors not mentioned above. Ferruginous Ducks spent their 56.7% active time in foraging, 13.8% in locomotion, 11.8% in maintenance, 11.2% in resting, 5.1% in alert and 1.4% in other behavior. The ducks invested their active time on forage, rest and maintain was extremely different (P<0.01) between the periods of July to September and October to November, But they did not change their time duration in locomotion behavior between the same periods (P >0.05). The active pecks of foraging, resting and maintaining varied with time period, while locomotion behavior peaked at 12:00-13:00 during the study period. The ducks scatter foraged on the water surface, but they usually rested together. A large group (about 37 individuals) was observed in the middle of October before they left in late October for migration.