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鸟巢,主要是鸟产卵育雏的地方,在多数情况下,鸟就站在树枝上睡觉。那么,细小的树枝,小鸟不会睡着突然掉下来吗?不会的。这是小鸟千百万年来,已经完全习惯了的睡觉姿势,它的身体构造也适应了这种睡觉方式。
Bird’s nests are mainly places where birds lay their eggs and brood. In most cases, birds stand on branches and sleep. So small branches, birds do not fall asleep suddenly? No. This is the sleeping posture that the bird has been accustomed to for millions of years. Its body structure also adapts to this way of sleeping.