The behavioral activity of Oriental white stork at different stages of breeding season had definite rhythm, and the diurnal rhythm differed obviously.
东方白鹳在繁殖期不同阶段行为活动存在一定节律，并且不同阶段日节律明显不同。
While there are some individual differences in the circadian rhythm, where some individuals are more nocturnal than others, humans are basically a diurnal (day-living) species.
虽然在昼夜节律中，人与人具有个体差异，但人类基本上都是在白天活动的。
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