The displacement activity, the grooming, the straightening of its feathers, seems to be an irrelevant behavior.
替换活动，如梳理、拉直羽毛，似乎都是无关的行为。
Now this is displacement activities can include feeding, drinking, grooming even sleeping, these are we call comfort behavior.
现在这是位移活动可以包括喂食、喝酒、打扮虽然睡觉，这些都是我们称之为安慰行为。
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