天鹅那些恩爱的事儿
本帖最后由 星星二初哥 于 2016-2-1 17:36 编辑黑颈天鹅是世界上感情最专一的动物之一，严格实行一夫一妻制，很多天鹅宁可孤独终老也不随便找个配偶了事，一旦结成连理夫妻非常恩爱，出双入对，相伴一生，他们一起觅食、休息、戏水，甚至在迁徙的途中，也前后照应从不分离；如果一只不幸死去，另一只会终日抑郁哀鸣，宁可孤单寂寞也不再另觅伴侣。
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