Abstract: Employing random individuals and continuous sampling methods,this paper quantified the diurnal timeactivity budgets of Falco tinnunculus from November 2003 to February 2004 in Shanghai suburb.The results showed that the individuals of F.tinnunculus spent most time in perching (44.45%) and hunting (18.83%),with less time spent on sitting (12.17%),flying (9.98%),soaring (8.11%),wind hovering (3.46%),preening (1.70%),and interacting (1.32%) during their active daytime.In early morning,midday and late afternoon,the individuals spent high proportion of time on perching.There were two hunting peaks in a day,respectively in morning and afternoon.Two activity peaks of the individuals were observed in midmorning (8∶00～10∶00) and midafternoon (13∶00～15∶00).Correlation analysis suggested that the two activity peaks were composed of hunting and its related activities,including flying and wind hovering.

Key words: Interspecific association, χ²-test, Association coefficient, 2×2 contingency table, Plantation