The time-active budget of captive Red-crowned Crane behavior shows circadian rhythm generally.

笼养丹顶鹤繁殖期行为与非繁殖期行为均呈现一定的日活动节律。

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The time-active budget of captive Red-crowned Crane behavior shows circadian rhythm generally.

笼养丹顶鹤繁殖期行为与非繁殖期行为均呈现一定的日活动节律。

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